12247140988 has 24 divisors (see below), whose sum is σ = 21587959008. Its totient is φ = 6079313856.

The previous prime is 12247140937. The next prime is 12247140989. The reversal of 12247140988 is 88904174221.

It is a super-2 number, since 2×12247140988² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12247140989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288370 + ... + 328102.

It is an arithmetic number, because the mean of its divisors is an integer number (899498292).

Almost surely, 2^12247140988 is an apocalyptic number.

It is an amenable number.

12247140988 is a deficient number, since it is larger than the sum of its proper divisors (9340818020).

12247140988 is a wasteful number, since it uses less digits than its factorization.

12247140988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40293 (or 40291 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 12247140988 in words is "twelve billion, two hundred forty-seven million, one hundred forty thousand, nine hundred eighty-eight".