12712223136 has 24 divisors (see below), whose sum is σ = 33369585984. Its totient is φ = 4237407680.

The previous prime is 12712223129. The next prime is 12712223189. The reversal of 12712223136 is 63132221721.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66209400 + ... + 66209591.

It is an arithmetic number, because the mean of its divisors is an integer number (1390399416).

Almost surely, 2^12712223136 is an apocalyptic number.

12712223136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12712223136 is an abundant number, since it is smaller than the sum of its proper divisors (20657362848).

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

12712223136 is a wasteful number, since it uses less digits than its factorization.

12712223136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132419004 (or 132418996 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

Adding to 12712223136 its reverse (63132221721), we get a palindrome (75844444857).

The spelling of 12712223136 in words is "twelve billion, seven hundred twelve million, two hundred twenty-three thousand, one hundred thirty-six".