12217701931 has 2 divisors, whose sum is σ = 12217701932. Its totient is φ = 12217701930.

The previous prime is 12217701911. The next prime is 12217701973. The reversal of 12217701931 is 13910771221.

It is a weak prime.

It is an emirp because it is prime and its reverse (13910771221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12217701931 - 2¹¹ = 12217699883 is a prime.

It is a super-2 number, since 2×12217701931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12217701901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6108850965 + 6108850966.

It is an arithmetic number, because the mean of its divisors is an integer number (6108850966).

Almost surely, 2^12217701931 is an apocalyptic number.

12217701931 is a deficient number, since it is larger than the sum of its proper divisors (1).

12217701931 is an equidigital number, since it uses as much as digits as its factorization.

12217701931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 34.

The spelling of 12217701931 in words is "twelve billion, two hundred seventeen million, seven hundred one thousand, nine hundred thirty-one".