22021202231 has 8 divisors (see below), whose sum is σ = 25170380064. Its totient is φ = 18872847360.

The previous prime is 22021202227. The next prime is 22021202233. The reversal of 22021202231 is 13220212022.

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 22021202231 - 2² = 22021202227 is a prime.

It is a super-2 number, since 2×22021202231² (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 (22021202233) 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, 147290 + ... + 256391.

It is an arithmetic number, because the mean of its divisors is an integer number (3146297508).

Almost surely, 2^22021202231 is an apocalyptic number.

22021202231 is a deficient number, since it is larger than the sum of its proper divisors (3149177833).

22021202231 is an equidigital number, since it uses as much as digits as its factorization.

22021202231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411481.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22021202231 its reverse (13220212022), we get a palindrome (35241414253).

The spelling of 22021202231 in words is "twenty-two billion, twenty-one million, two hundred two thousand, two hundred thirty-one".