12210517156 has 6 divisors (see below), whose sum is σ = 21368405030. Its totient is φ = 6105258576.

The previous prime is 12210517153. The next prime is 12210517157. The reversal of 12210517156 is 65171501221.

It can be written as a sum of positive squares in only one way, i.e., 12151534756 + 58982400 = 110234^2 + 7680^2 .

It is not an unprimeable number, because it can be changed into a prime (12210517153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1526314641 + ... + 1526314648.

Almost surely, 2^12210517156 is an apocalyptic number.

It is an amenable number.

12210517156 is a deficient number, since it is larger than the sum of its proper divisors (9157887874).

12210517156 is a wasteful number, since it uses less digits than its factorization.

12210517156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052629293 (or 3052629291 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 31.

The spelling of 12210517156 in words is "twelve billion, two hundred ten million, five hundred seventeen thousand, one hundred fifty-six".