10121322156 has 48 divisors (see below), whose sum is σ = 26391754368. Its totient is φ = 2992259200.

The previous prime is 10121322149. The next prime is 10121322157. The reversal of 10121322156 is 65122312101.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (10121322157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 929670 + ... + 940493.

It is an arithmetic number, because the mean of its divisors is an integer number (549828216).

Almost surely, 2^10121322156 is an apocalyptic number.

It is an amenable number.

10121322156 is an abundant number, since it is smaller than the sum of its proper divisors (16270432212).

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

10121322156 is a wasteful number, since it uses less digits than its factorization.

10121322156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870222 (or 1870220 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 10121322156 its reverse (65122312101), we get a palindrome (75243634257).

The spelling of 10121322156 in words is "ten billion, one hundred twenty-one million, three hundred twenty-two thousand, one hundred fifty-six".