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10020201212020 = 225501010060601
BaseRepresentation
bin1001000111010000001010…
…0010001010100001110100
31022110220220001101011002011
42101310002202022201310
52303132333002241040
633151114503054004
72052635632664206
oct221640242124164
938426801334064
1010020201212020
1132135a83a366a
121159b95141304
13578b9342300c
14268da2030776
151259ad6a73ea
hex91d0288a874

10020201212020 has 12 divisors (see below), whose sum is σ = 21042422545284. Its totient is φ = 4008080484800.

The previous prime is 10020201212011. The next prime is 10020201212027. The reversal of 10020201212020 is 2021210202001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4464016803684 + 5556184408336 = 2112822^2 + 2357156^2 .

It is a super-4 number, since 4×100202012120204 (a number of 53 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020201212027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250505030281 + ... + 250505030320.

It is an arithmetic number, because the mean of its divisors is an integer number (1753535212107).

Almost surely, 210020201212020 is an apocalyptic number.

10020201212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10020201212020 is an abundant number, since it is smaller than the sum of its proper divisors (11022221333264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10020201212020 is a wasteful number, since it uses less digits than its factorization.

10020201212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501010060610 (or 501010060608 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10020201212020 its reverse (2021210202001), we get a palindrome (12041411414021).

The spelling of 10020201212020 in words is "ten trillion, twenty billion, two hundred one million, two hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 501010060601 1002020121202 2004040242404 2505050303005 5010100606010 10020201212020