21202323231001 has 16 divisors (see below), whose sum is σ = 23406952320000. Its totient is φ = 19045239577600.

The previous prime is 21202323230969. The next prime is 21202323231041. The reversal of 21202323231001 is 10013232320212.

It is a cyclic number.

It is not a de Polignac number, because 21202323231001 - 2⁵ = 21202323230969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202323231041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33551176 + ... + 34177273.

It is an arithmetic number, because the mean of its divisors is an integer number (1462934520000).

Almost surely, 2^{21202323231001} is an apocalyptic number.

It is an amenable number.

21202323231001 is a deficient number, since it is larger than the sum of its proper divisors (2204629088999).

21202323231001 is a wasteful number, since it uses less digits than its factorization.

21202323231001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67728800.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21202323231001 its reverse (10013232320212), we get a palindrome (31215555551213).

The spelling of 21202323231001 in words is "twenty-one trillion, two hundred two billion, three hundred twenty-three million, two hundred thirty-one thousand, one".