23022221312021 has 4 divisors (see below), whose sum is σ = 23365836555552. Its totient is φ = 22678606068492.

The previous prime is 23022221312003. The next prime is 23022221312033. The reversal of 23022221312021 is 12021312222032.

It is a happy number.

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 23022221312021 - 2¹⁰ = 23022221310997 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 (23022221372021) 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, 171807621665 + ... + 171807621798.

It is an arithmetic number, because the mean of its divisors is an integer number (5841459138888).

Almost surely, 2^{23022221312021} is an apocalyptic number.

It is an amenable number.

23022221312021 is a deficient number, since it is larger than the sum of its proper divisors (343615243531).

23022221312021 is an equidigital number, since it uses as much as digits as its factorization.

23022221312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343615243530.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 23022221312021 its reverse (12021312222032), we get a palindrome (35043533534053).

The spelling of 23022221312021 in words is "twenty-three trillion, twenty-two billion, two hundred twenty-one million, three hundred twelve thousand, twenty-one".