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1202200201220 = 22561985410001
BaseRepresentation
bin10001011111101000101…
…101110100100000000100
311020221002101202220122112
4101133220231310200010
5124144101222414340
62320141054320152
7152566433050604
oct21375055644004
94227071686575
101202200201220
11423939743907
12174bb24b9058
13894a0389b15
1442288818c04
1521412e47065
hex117e8b74804

1202200201220 has 24 divisors (see below), whose sum is σ = 2566007645208. Its totient is φ = 472996800000.

The previous prime is 1202200201201. The next prime is 1202200201253. The reversal of 1202200201220 is 221020022021.

It can be written as a sum of positive squares in 4 ways, for example, as 85572630784 + 1116627570436 = 292528^2 + 1056706^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1202200201195 and 1202200201204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492703781 + ... + 492706220.

It is an arithmetic number, because the mean of its divisors is an integer number (106916985217).

Almost surely, 21202200201220 is an apocalyptic number.

1202200201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202200201220 is an abundant number, since it is smaller than the sum of its proper divisors (1363807443988).

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

1202200201220 is a wasteful number, since it uses less digits than its factorization.

1202200201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985410071 (or 985410069 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1202200201220 its reverse (221020022021), we get a palindrome (1423220223241).

The spelling of 1202200201220 in words is "one trillion, two hundred two billion, two hundred million, two hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 985410001 1970820002 3941640004 4927050005 9854100010 19708200020 60110010061 120220020122 240440040244 300550050305 601100100610 1202200201220