222121022220231 has 32 divisors (see below), whose sum is σ = 313806591521280. Its totient is φ = 139270523191296.

The previous prime is 222121022220179. The next prime is 222121022220233. The reversal of 222121022220231 is 132022220121222.

It is not a de Polignac number, because 222121022220231 - 2¹³ = 222121022212039 is a prime.

It is a super-2 number, since 2×222121022220231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121022220233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1178785735 + ... + 1178974151.

It is an arithmetic number, because the mean of its divisors is an integer number (9806455985040).

Almost surely, 2^{222121022220231} is an apocalyptic number.

222121022220231 is a deficient number, since it is larger than the sum of its proper divisors (91685569301049).

222121022220231 is a wasteful number, since it uses less digits than its factorization.

222121022220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204823.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 222121022220231 its reverse (132022220121222), we get a palindrome (354143242341453).

The spelling of 222121022220231 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, twenty-two million, two hundred twenty thousand, two hundred thirty-one".