222122131961 has 2 divisors, whose sum is σ = 222122131962. Its totient is φ = 222122131960.

The previous prime is 222122131949. The next prime is 222122131993. The reversal of 222122131961 is 169131221222.

It is an a-pointer prime, because the next prime (222122131993) can be obtained adding 222122131961 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216443605225 + 5678526736 = 465235^2 + 75356^2 .

It is a cyclic number.

It is not a de Polignac number, because 222122131961 - 2²⁶ = 222055023097 is a prime.

It is not a weakly prime, because it can be changed into another prime (222122131261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111061065980 + 111061065981.

It is an arithmetic number, because the mean of its divisors is an integer number (111061065981).

Almost surely, 2^222122131961 is an apocalyptic number.

It is an amenable number.

222122131961 is a deficient number, since it is larger than the sum of its proper divisors (1).

222122131961 is an equidigital number, since it uses as much as digits as its factorization.

222122131961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The spelling of 222122131961 in words is "two hundred twenty-two billion, one hundred twenty-two million, one hundred thirty-one thousand, nine hundred sixty-one".