21230231033201 has 4 divisors (see below), whose sum is σ = 21382966508400. Its totient is φ = 21077495558004.

The previous prime is 21230231033189. The next prime is 21230231033311. The reversal of 21230231033201 is 10233013203212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21230231033201 - 2¹⁰ = 21230231032177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21230231032201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76367737391 + ... + 76367737668.

It is an arithmetic number, because the mean of its divisors is an integer number (5345741627100).

Almost surely, 2^{21230231033201} is an apocalyptic number.

It is an amenable number.

21230231033201 is a deficient number, since it is larger than the sum of its proper divisors (152735475199).

21230231033201 is a wasteful number, since it uses less digits than its factorization.

21230231033201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152735475198.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21230231033201 its reverse (10233013203212), we get a palindrome (31463244236413).

The spelling of 21230231033201 in words is "twenty-one trillion, two hundred thirty billion, two hundred thirty-one million, thirty-three thousand, two hundred one".