222464760368581 has 2 divisors, whose sum is σ = 222464760368582. Its totient is φ = 222464760368580.

The previous prime is 222464760368509. The next prime is 222464760368603. The reversal of 222464760368581 is 185863067464222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147510133890625 + 74954626477956 = 12145375^2 + 8657634^2 .

It is a cyclic number.

It is not a de Polignac number, because 222464760368581 - 2¹³ = 222464760360389 is a prime.

It is a super-2 number, since 2×222464760368581² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222464760368681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111232380184290 + 111232380184291.

It is an arithmetic number, because the mean of its divisors is an integer number (111232380184291).

Almost surely, 2^{222464760368581} is an apocalyptic number.

It is an amenable number.

222464760368581 is a deficient number, since it is larger than the sum of its proper divisors (1).

222464760368581 is an equidigital number, since it uses as much as digits as its factorization.

222464760368581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 185794560, while the sum is 64.

The spelling of 222464760368581 in words is "two hundred twenty-two trillion, four hundred sixty-four billion, seven hundred sixty million, three hundred sixty-eight thousand, five hundred eighty-one".