12711973226 has 4 divisors (see below), whose sum is σ = 19067959842. Its totient is φ = 6355986612.

The previous prime is 12711973223. The next prime is 12711973249. The reversal of 12711973226 is 62237911721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8538684025 + 4173289201 = 92405^2 + 64601^2 .

It is not an unprimeable number, because it can be changed into a prime (12711973223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3177993305 + ... + 3177993308.

Almost surely, 2^12711973226 is an apocalyptic number.

12711973226 is a deficient number, since it is larger than the sum of its proper divisors (6355986616).

12711973226 is an equidigital number, since it uses as much as digits as its factorization.

12711973226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6355986615.

The product of its digits is 63504, while the sum is 41.

The spelling of 12711973226 in words is "twelve billion, seven hundred eleven million, nine hundred seventy-three thousand, two hundred twenty-six".