15222220124 has 6 divisors (see below), whose sum is σ = 26638885224. Its totient is φ = 7611110060.

The previous prime is 15222220103. The next prime is 15222220187. The reversal of 15222220124 is 42102222251.

It is a self number, because there is not a number n which added to its sum of digits gives 15222220124.

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, 1902777512 + ... + 1902777519.

It is an arithmetic number, because the mean of its divisors is an integer number (4439814204).

Almost surely, 2^15222220124 is an apocalyptic number.

It is an amenable number.

15222220124 is a deficient number, since it is larger than the sum of its proper divisors (11416665100).

15222220124 is a wasteful number, since it uses less digits than its factorization.

15222220124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805555035 (or 3805555033 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 15222220124 its reverse (42102222251), we get a palindrome (57324442375).

The spelling of 15222220124 in words is "fifteen billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twenty-four".