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10010121010121 = 19735073553477
BaseRepresentation
bin1001000110101010100110…
…1101001111101111001001
31022102221212112200211122002
42101222221231033233021
52303001211434310441
633142330333240345
72052131062455401
oct221525155175711
938387775624562
1010010121010121
11320a2a538a7a1
1211580413330b5
13577c47c345cb
142686c7391801
151255bd755b9b
hex91aa9b4fbc9

10010121010121 has 4 divisors (see below), whose sum is σ = 10015194565572. Its totient is φ = 10005047454672.

The previous prime is 10010121010093. The next prime is 10010121010133. The reversal of 10010121010121 is 12101012101001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4247984812096 + 5762136198025 = 2061064^2 + 2400445^2 .

It is a cyclic number.

It is not a de Polignac number, because 10010121010121 - 234 = 9992941140937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10010121030121) 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, 2536774766 + ... + 2536778711.

It is an arithmetic number, because the mean of its divisors is an integer number (2503798641393).

Almost surely, 210010121010121 is an apocalyptic number.

It is an amenable number.

10010121010121 is a deficient number, since it is larger than the sum of its proper divisors (5073555451).

10010121010121 is an equidigital number, since it uses as much as digits as its factorization.

10010121010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5073555450.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10010121010121 its reverse (12101012101001), we get a palindrome (22111133111122).

The spelling of 10010121010121 in words is "ten trillion, ten billion, one hundred twenty-one million, ten thousand, one hundred twenty-one".

Divisors: 1 1973 5073553477 10010121010121