12021103220431 has 2 divisors, whose sum is σ = 12021103220432. Its totient is φ = 12021103220430.

The previous prime is 12021103220419. The next prime is 12021103220447. The reversal of 12021103220431 is 13402230112021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021103220431 is a prime.

It is a super-2 number, since 2×12021103220431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021103220131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010551610215 + 6010551610216.

It is an arithmetic number, because the mean of its divisors is an integer number (6010551610216).

Almost surely, 2^{12021103220431} is an apocalyptic number.

12021103220431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021103220431 is an equidigital number, since it uses as much as digits as its factorization.

12021103220431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12021103220431 its reverse (13402230112021), we get a palindrome (25423333332452).

The spelling of 12021103220431 in words is "twelve trillion, twenty-one billion, one hundred three million, two hundred twenty thousand, four hundred thirty-one".