12223503972 has 18 divisors (see below), whose sum is σ = 30898301798. Its totient is φ = 4074501312.

The previous prime is 12223503953. The next prime is 12223503977. The reversal of 12223503972 is 27930532221.

It is a happy number.

12223503972 is a `hidden beast` number, since 122 + 23 + 503 + 9 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10750786596 + 1472717376 = 103686^2 + 38376^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 339541777 = 12223503972 / (1 + 2 + 2 + 2 + 3 + 5 + 0 + 3 + 9 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (12223503977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169770853 + ... + 169770924.

Almost surely, 2^12223503972 is an apocalyptic number.

12223503972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12223503972 is an abundant number, since it is smaller than the sum of its proper divisors (18674797826).

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

12223503972 is a wasteful number, since it uses less digits than its factorization.

12223503972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339541787 (or 339541782 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 12223503972 in words is "twelve billion, two hundred twenty-three million, five hundred three thousand, nine hundred seventy-two".