22033220231 has 8 divisors (see below), whose sum is σ = 25081294464. Its totient is φ = 19159321720.

The previous prime is 22033220227. The next prime is 22033220233. The reversal of 22033220231 is 13202233022.

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

It is not a de Polignac number, because 22033220231 - 2² = 22033220227 is a prime.

It is a super-2 number, since 2×22033220231² (a number of 21 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 (22033220233) 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, 43543661 + ... + 43544166.

It is an arithmetic number, because the mean of its divisors is an integer number (3135161808).

Almost surely, 2^22033220231 is an apocalyptic number.

22033220231 is a deficient number, since it is larger than the sum of its proper divisors (3048074233).

22033220231 is a wasteful number, since it uses less digits than its factorization.

22033220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87087861.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 22033220231 its reverse (13202233022), we get a palindrome (35235453253).

The spelling of 22033220231 in words is "twenty-two billion, thirty-three million, two hundred twenty thousand, two hundred thirty-one".