15220120502 has 8 divisors (see below), whose sum is σ = 24173132616. Its totient is φ = 7162409632.

The previous prime is 15220120501. The next prime is 15220120529. The reversal of 15220120502 is 20502102251.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15220120501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223825268 + ... + 223825335.

It is an arithmetic number, because the mean of its divisors is an integer number (3021641577).

Almost surely, 2^15220120502 is an apocalyptic number.

15220120502 is a deficient number, since it is larger than the sum of its proper divisors (8953012114).

15220120502 is a wasteful number, since it uses less digits than its factorization.

15220120502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447650622.

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 15220120502 its reverse (20502102251), we get a palindrome (35722222753).

The spelling of 15220120502 in words is "fifteen billion, two hundred twenty million, one hundred twenty thousand, five hundred two".