15223252212 has 96 divisors (see below), whose sum is σ = 46561034240. Its totient is φ = 4209187680.

The previous prime is 15223252211. The next prime is 15223252229. The reversal of 15223252212 is 21225232251.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15223252211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301348 + ... + 348219.

Almost surely, 2^15223252212 is an apocalyptic number.

15223252212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15223252212 is an abundant number, since it is smaller than the sum of its proper divisors (31337782028).

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

15223252212 is a wasteful number, since it uses less digits than its factorization.

15223252212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649618 (or 649610 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

Adding to 15223252212 its reverse (21225232251), we get a palindrome (36448484463).

The spelling of 15223252212 in words is "fifteen billion, two hundred twenty-three million, two hundred fifty-two thousand, two hundred twelve".