21010013422031 has 2 divisors, whose sum is σ = 21010013422032. Its totient is φ = 21010013422030.

The previous prime is 21010013422009. The next prime is 21010013422039. The reversal of 21010013422031 is 13022431001012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21010013422031 is a prime.

It is a super-2 number, since 2×21010013422031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21010013421994 and 21010013422012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010013422039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505006711015 + 10505006711016.

It is an arithmetic number, because the mean of its divisors is an integer number (10505006711016).

Almost surely, 2^{21010013422031} is an apocalyptic number.

21010013422031 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010013422031 is an equidigital number, since it uses as much as digits as its factorization.

21010013422031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21010013422031 its reverse (13022431001012), we get a palindrome (34032444423043).

The spelling of 21010013422031 in words is "twenty-one trillion, ten billion, thirteen million, four hundred twenty-two thousand, thirty-one".