21900110585723 has 2 divisors, whose sum is σ = 21900110585724. Its totient is φ = 21900110585722.

The previous prime is 21900110585659. The next prime is 21900110585779. The reversal of 21900110585723 is 32758501100912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21900110585723 - 2⁶ = 21900110585659 is a prime.

It is a super-2 number, since 2×21900110585723² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21900110545723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10950055292861 + 10950055292862.

It is an arithmetic number, because the mean of its divisors is an integer number (10950055292862).

Almost surely, 2^{21900110585723} is an apocalyptic number.

21900110585723 is a deficient number, since it is larger than the sum of its proper divisors (1).

21900110585723 is an equidigital number, since it uses as much as digits as its factorization.

21900110585723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 44.

The spelling of 21900110585723 in words is "twenty-one trillion, nine hundred billion, one hundred ten million, five hundred eighty-five thousand, seven hundred twenty-three".