21102000222031 has 2 divisors, whose sum is σ = 21102000222032. Its totient is φ = 21102000222030.

The previous prime is 21102000222013. The next prime is 21102000222041. The reversal of 21102000222031 is 13022200020112.

It is a happy number.

Together with previous prime (21102000222013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21102000222031 - 2¹¹ = 21102000219983 is a prime.

It is a super-2 number, since 2×21102000222031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21102000221996 and 21102000222014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21102000222041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551000111015 + 10551000111016.

It is an arithmetic number, because the mean of its divisors is an integer number (10551000111016).

Almost surely, 2^{21102000222031} is an apocalyptic number.

21102000222031 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102000222031 is an equidigital number, since it uses as much as digits as its factorization.

21102000222031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21102000222031 its reverse (13022200020112), we get a palindrome (34124200242143).

The spelling of 21102000222031 in words is "twenty-one trillion, one hundred two billion, two hundred twenty-two thousand, thirty-one".