21223101074431 has 2 divisors, whose sum is σ = 21223101074432. Its totient is φ = 21223101074430.

The previous prime is 21223101074387. The next prime is 21223101074491. The reversal of 21223101074431 is 13447010132212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21223101074431 - 2²⁵ = 21223067519999 is a prime.

It is a super-2 number, since 2×21223101074431² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21223101074393 and 21223101074402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21223101074491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611550537215 + 10611550537216.

It is an arithmetic number, because the mean of its divisors is an integer number (10611550537216).

Almost surely, 2^{21223101074431} is an apocalyptic number.

21223101074431 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223101074431 is an equidigital number, since it uses as much as digits as its factorization.

21223101074431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 21223101074431 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred one million, seventy-four thousand, four hundred thirty-one".