21011022320231 has 8 divisors (see below), whose sum is σ = 21154203021600. Its totient is φ = 20867870514208.

The previous prime is 21011022320203. The next prime is 21011022320237. The reversal of 21011022320231 is 13202322011012.

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

It is a cyclic number.

It is not a de Polignac number, because 21011022320231 - 2³⁸ = 20736144413287 is a prime.

It is a super-2 number, since 2×21011022320231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011022320237) 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, 5763596 + ... + 8674161.

It is an arithmetic number, because the mean of its divisors is an integer number (2644275377700).

Almost surely, 2^{21011022320231} is an apocalyptic number.

21011022320231 is a deficient number, since it is larger than the sum of its proper divisors (143180701369).

21011022320231 is a wasteful number, since it uses less digits than its factorization.

21011022320231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14447673.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21011022320231 its reverse (13202322011012), we get a palindrome (34213344331243).

The spelling of 21011022320231 in words is "twenty-one trillion, eleven billion, twenty-two million, three hundred twenty thousand, two hundred thirty-one".