21534110022023 has 2 divisors, whose sum is σ = 21534110022024. Its totient is φ = 21534110022022.

The previous prime is 21534110022001. The next prime is 21534110022031. The reversal of 21534110022023 is 32022001143512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21534110022023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21534110021983 and 21534110022001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21534110022043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10767055011011 + 10767055011012.

It is an arithmetic number, because the mean of its divisors is an integer number (10767055011012).

Almost surely, 2^{21534110022023} is an apocalyptic number.

21534110022023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21534110022023 is an equidigital number, since it uses as much as digits as its factorization.

21534110022023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 21534110022023 its reverse (32022001143512), we get a palindrome (53556111165535).

The spelling of 21534110022023 in words is "twenty-one trillion, five hundred thirty-four billion, one hundred ten million, twenty-two thousand, twenty-three".