15151112220 has 48 divisors (see below), whose sum is σ = 42732795168. Its totient is φ = 4010803200.

The previous prime is 15151112219. The next prime is 15151112239. The reversal of 15151112220 is 2221115151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913381 + ... + 929820.

It is an arithmetic number, because the mean of its divisors is an integer number (890266566).

Almost surely, 2^15151112220 is an apocalyptic number.

15151112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15151112220 is an abundant number, since it is smaller than the sum of its proper divisors (27581682948).

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

15151112220 is a wasteful number, since it uses less digits than its factorization.

15151112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843350 (or 1843348 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 15151112220 its reverse (2221115151), we get a palindrome (17372227371).

The spelling of 15151112220 in words is "fifteen billion, one hundred fifty-one million, one hundred twelve thousand, two hundred twenty".