15250021122 has 64 divisors (see below), whose sum is σ = 37766006784. Its totient is φ = 4005469440.

The previous prime is 15250021117. The next prime is 15250021123. The reversal of 15250021122 is 22112005251.

15250021122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×15250021122² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (15250021123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217654 + ... + 279057.

It is an arithmetic number, because the mean of its divisors is an integer number (590093856).

Almost surely, 2^15250021122 is an apocalyptic number.

15250021122 is an abundant number, since it is smaller than the sum of its proper divisors (22515985662).

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

15250021122 is a wasteful number, since it uses less digits than its factorization.

15250021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496783.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 15250021122 its reverse (22112005251), we get a palindrome (37362026373).

The spelling of 15250021122 in words is "fifteen billion, two hundred fifty million, twenty-one thousand, one hundred twenty-two".