21612038014711 has 2 divisors, whose sum is σ = 21612038014712. Its totient is φ = 21612038014710.

The previous prime is 21612038014661. The next prime is 21612038014733. The reversal of 21612038014711 is 11741083021612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21612038014711 - 2²⁵ = 21612004460279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21612038014771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10806019007355 + 10806019007356.

It is an arithmetic number, because the mean of its divisors is an integer number (10806019007356).

Almost surely, 2^{21612038014711} is an apocalyptic number.

21612038014711 is a deficient number, since it is larger than the sum of its proper divisors (1).

21612038014711 is an equidigital number, since it uses as much as digits as its factorization.

21612038014711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The spelling of 21612038014711 in words is "twenty-one trillion, six hundred twelve billion, thirty-eight million, fourteen thousand, seven hundred eleven".