21211002010023 has 32 divisors (see below), whose sum is σ = 32416981900800. Its totient is φ = 12084785197056.

The previous prime is 21211002010019. The next prime is 21211002010027. The reversal of 21211002010023 is 32001020011212.

It is an interprime number because it is at equal distance from previous prime (21211002010019) and next prime (21211002010027).

It is not a de Polignac number, because 21211002010023 - 2² = 21211002010019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21211002009984 and 21211002010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211002010027) 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, 63132063 + ... + 63467151.

It is an arithmetic number, because the mean of its divisors is an integer number (1013030684400).

Almost surely, 2^{21211002010023} is an apocalyptic number.

21211002010023 is a deficient number, since it is larger than the sum of its proper divisors (11205979890777).

21211002010023 is a wasteful number, since it uses less digits than its factorization.

21211002010023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343991.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21211002010023 its reverse (32001020011212), we get a palindrome (53212022021235).

The spelling of 21211002010023 in words is "twenty-one trillion, two hundred eleven billion, two million, ten thousand, twenty-three".