222131221212281 has 2 divisors, whose sum is σ = 222131221212282. Its totient is φ = 222131221212280.

The previous prime is 222131221212227. The next prime is 222131221212337. The reversal of 222131221212281 is 182212122131222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184134586944400 + 37996634267881 = 13569620^2 + 6164141^2 .

It is a cyclic number.

It is not a de Polignac number, because 222131221212281 - 2⁴⁶ = 151762477034617 is a prime.

It is a super-2 number, since 2×222131221212281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222131229212281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111065610606140 + 111065610606141.

It is an arithmetic number, because the mean of its divisors is an integer number (111065610606141).

Almost surely, 2^{222131221212281} is an apocalyptic number.

It is an amenable number.

222131221212281 is a deficient number, since it is larger than the sum of its proper divisors (1).

222131221212281 is an equidigital number, since it uses as much as digits as its factorization.

222131221212281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 32.

The spelling of 222131221212281 in words is "two hundred twenty-two trillion, one hundred thirty-one billion, two hundred twenty-one million, two hundred twelve thousand, two hundred eighty-one".