21023340021311 has 32 divisors (see below), whose sum is σ = 22386602438400. Its totient is φ = 19742184196128.

The previous prime is 21023340021269. The next prime is 21023340021319. The reversal of 21023340021311 is 11312004332012.

It is not a de Polignac number, because 21023340021311 - 2¹⁸ = 21023339759167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023340021319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356521916 + ... + 356580878.

It is an arithmetic number, because the mean of its divisors is an integer number (699581326200).

Almost surely, 2^{21023340021311} is an apocalyptic number.

21023340021311 is a deficient number, since it is larger than the sum of its proper divisors (1363262417089).

21023340021311 is an equidigital number, since it uses as much as digits as its factorization.

21023340021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59476 (or 59438 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21023340021311 its reverse (11312004332012), we get a palindrome (32335344353323).

The spelling of 21023340021311 in words is "twenty-one trillion, twenty-three billion, three hundred forty million, twenty-one thousand, three hundred eleven".