22212031117 has 2 divisors, whose sum is σ = 22212031118. Its totient is φ = 22212031116.

The previous prime is 22212031091. The next prime is 22212031133. The reversal of 22212031117 is 71113021222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22013953641 + 198077476 = 148371^2 + 14074^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212031117 - 2²³ = 22203642509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22212031157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106015558 + 11106015559.

It is an arithmetic number, because the mean of its divisors is an integer number (11106015559).

Almost surely, 2^22212031117 is an apocalyptic number.

It is an amenable number.

22212031117 is a deficient number, since it is larger than the sum of its proper divisors (1).

22212031117 is an equidigital number, since it uses as much as digits as its factorization.

22212031117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 22212031117 its reverse (71113021222), we get a palindrome (93325052339).

The spelling of 22212031117 in words is "twenty-two billion, two hundred twelve million, thirty-one thousand, one hundred seventeen".