21021001114031 has 2 divisors, whose sum is σ = 21021001114032. Its totient is φ = 21021001114030.

The previous prime is 21021001114019. The next prime is 21021001114033. The reversal of 21021001114031 is 13041110012012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21021001114031 - 2¹⁴ = 21021001097647 is a prime.

It is a super-2 number, since 2×21021001114031² (a number of 27 digits) contains 22 as substring.

Together with 21021001114033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21021001114033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510500557015 + 10510500557016.

It is an arithmetic number, because the mean of its divisors is an integer number (10510500557016).

Almost surely, 2^{21021001114031} is an apocalyptic number.

21021001114031 is a deficient number, since it is larger than the sum of its proper divisors (1).

21021001114031 is an equidigital number, since it uses as much as digits as its factorization.

21021001114031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21021001114031 its reverse (13041110012012), we get a palindrome (34062111126043).

The spelling of 21021001114031 in words is "twenty-one trillion, twenty-one billion, one million, one hundred fourteen thousand, thirty-one".