15121001022 has 16 divisors (see below), whose sum is σ = 30885449472. Its totient is φ = 4933092440.

The previous prime is 15121001009. The next prime is 15121001087. The reversal of 15121001022 is 22010012151.

It is a junction number, because it is equal to n+sod(n) for n = 15121000992 and 15121001010.

It is a congruent number.

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, 26810004 + ... + 26810567.

It is an arithmetic number, because the mean of its divisors is an integer number (1930340592).

Almost surely, 2^15121001022 is an apocalyptic number.

15121001022 is an abundant number, since it is smaller than the sum of its proper divisors (15764448450).

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

15121001022 is a wasteful number, since it uses less digits than its factorization.

15121001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53620623.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 15121001022 its reverse (22010012151), we get a palindrome (37131013173).

The spelling of 15121001022 in words is "fifteen billion, one hundred twenty-one million, one thousand, twenty-two".