21111332201023 has 2 divisors, whose sum is σ = 21111332201024. Its totient is φ = 21111332201022.

The previous prime is 21111332201017. The next prime is 21111332201119. The reversal of 21111332201023 is 32010223311112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21111332201023 - 2¹⁷ = 21111332069951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21111332200985 and 21111332201003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21111332301023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555666100511 + 10555666100512.

It is an arithmetic number, because the mean of its divisors is an integer number (10555666100512).

Almost surely, 2^{21111332201023} is an apocalyptic number.

21111332201023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21111332201023 is an equidigital number, since it uses as much as digits as its factorization.

21111332201023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21111332201023 its reverse (32010223311112), we get a palindrome (53121555512135).

The spelling of 21111332201023 in words is "twenty-one trillion, one hundred eleven billion, three hundred thirty-two million, two hundred one thousand, twenty-three".