21023233222331 has 4 divisors (see below), whose sum is σ = 21055134942600. Its totient is φ = 20991331502064.

The previous prime is 21023233222307. The next prime is 21023233222367. The reversal of 21023233222331 is 13322233232012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21023233222331 - 2²² = 21023229028027 is a prime.

It is a super-2 number, since 2×21023233222331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21023233222294 and 21023233222303.

It is not an unprimeable number, because it can be changed into a prime (21023233222391) 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, 15950859146 + ... + 15950860463.

It is an arithmetic number, because the mean of its divisors is an integer number (5263783735650).

Almost surely, 2^{21023233222331} is an apocalyptic number.

21023233222331 is a deficient number, since it is larger than the sum of its proper divisors (31901720269).

21023233222331 is an equidigital number, since it uses as much as digits as its factorization.

21023233222331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31901720268.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 21023233222331 its reverse (13322233232012), we get a palindrome (34345466454343).

The spelling of 21023233222331 in words is "twenty-one trillion, twenty-three billion, two hundred thirty-three million, two hundred twenty-two thousand, three hundred thirty-one".