21230102201021 has 64 divisors (see below), whose sum is σ = 25288746393600. Its totient is φ = 17448563897856.

The previous prime is 21230102200997. The next prime is 21230102201107. The reversal of 21230102201021 is 12010220103212.

It is a de Polignac number, because none of the positive numbers 2^k-21230102201021 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 (21230102201921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5403434585 + ... + 5403438513.

It is an arithmetic number, because the mean of its divisors is an integer number (395136662400).

Almost surely, 2^{21230102201021} is an apocalyptic number.

It is an amenable number.

21230102201021 is a deficient number, since it is larger than the sum of its proper divisors (4058644192579).

21230102201021 is a wasteful number, since it uses less digits than its factorization.

21230102201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5898.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21230102201021 its reverse (12010220103212), we get a palindrome (33240322304233).

The spelling of 21230102201021 in words is "twenty-one trillion, two hundred thirty billion, one hundred two million, two hundred one thousand, twenty-one".