21323402122001 has 32 divisors (see below), whose sum is σ = 25520466216960. Its totient is φ = 17419825817856.

The previous prime is 21323402121941. The next prime is 21323402122069. The reversal of 21323402122001 is 10022120432312.

It is not a de Polignac number, because 21323402122001 - 2²² = 21323397927697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21323402122601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87720710 + ... + 87963456.

It is an arithmetic number, because the mean of its divisors is an integer number (797514569280).

Almost surely, 2^{21323402122001} is an apocalyptic number.

It is an amenable number.

21323402122001 is a deficient number, since it is larger than the sum of its proper divisors (4197064094959).

21323402122001 is a wasteful number, since it uses less digits than its factorization.

21323402122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244733.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21323402122001 its reverse (10022120432312), we get a palindrome (31345522554313).

The spelling of 21323402122001 in words is "twenty-one trillion, three hundred twenty-three billion, four hundred two million, one hundred twenty-two thousand, one".