12272821931 has 2 divisors, whose sum is σ = 12272821932. Its totient is φ = 12272821930.

The previous prime is 12272821807. The next prime is 12272821969. The reversal of 12272821931 is 13912827221.

It is an a-pointer prime, because the next prime (12272821969) can be obtained adding 12272821931 to its sum of digits (38).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12272821931 - 2²² = 12268627627 is a prime.

It is a super-2 number, since 2×12272821931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12272821991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6136410965 + 6136410966.

It is an arithmetic number, because the mean of its divisors is an integer number (6136410966).

Almost surely, 2^12272821931 is an apocalyptic number.

12272821931 is a deficient number, since it is larger than the sum of its proper divisors (1).

12272821931 is an equidigital number, since it uses as much as digits as its factorization.

12272821931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The spelling of 12272821931 in words is "twelve billion, two hundred seventy-two million, eight hundred twenty-one thousand, nine hundred thirty-one".