10010121656 has 8 divisors (see below), whose sum is σ = 18768978120. Its totient is φ = 5005060824.

The previous prime is 10010121623. The next prime is 10010121677. The reversal of 10010121656 is 65612101001.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625632596 + ... + 625632611.

It is an arithmetic number, because the mean of its divisors is an integer number (2346122265).

Almost surely, 2^10010121656 is an apocalyptic number.

It is an amenable number.

10010121656 is a deficient number, since it is larger than the sum of its proper divisors (8758856464).

10010121656 is a wasteful number, since it uses less digits than its factorization.

10010121656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251265213 (or 1251265209 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 10010121656 its reverse (65612101001), we get a palindrome (75622222657).

The spelling of 10010121656 in words is "ten billion, ten million, one hundred twenty-one thousand, six hundred fifty-six".