21002023011101 has 8 divisors (see below), whose sum is σ = 22911923356704. Its totient is φ = 19092226919920.

The previous prime is 21002023011043. The next prime is 21002023011133. The reversal of 21002023011101 is 10111032020012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21002023011101 - 2²² = 21002018816797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002023011901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25642091 + ... + 26448456.

It is an arithmetic number, because the mean of its divisors is an integer number (2863990419588).

Almost surely, 2^{21002023011101} is an apocalyptic number.

It is an amenable number.

21002023011101 is a deficient number, since it is larger than the sum of its proper divisors (1909900345603).

21002023011101 is a wasteful number, since it uses less digits than its factorization.

21002023011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52127211.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21002023011101 its reverse (10111032020012), we get a palindrome (31113055031113).

The spelling of 21002023011101 in words is "twenty-one trillion, two billion, twenty-three million, eleven thousand, one hundred one".