222608572721 has 2 divisors, whose sum is σ = 222608572722. Its totient is φ = 222608572720.

The previous prime is 222608572687. The next prime is 222608572819. The reversal of 222608572721 is 127275806222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140520019600 + 82088553121 = 374860^2 + 286511^2 .

It is a cyclic number.

It is not a de Polignac number, because 222608572721 - 2³⁴ = 205428703537 is a prime.

It is a super-3 number, since 3×222608572721³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (222608578721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111304286360 + 111304286361.

It is an arithmetic number, because the mean of its divisors is an integer number (111304286361).

Almost surely, 2^222608572721 is an apocalyptic number.

It is an amenable number.

222608572721 is a deficient number, since it is larger than the sum of its proper divisors (1).

222608572721 is an equidigital number, since it uses as much as digits as its factorization.

222608572721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 222608572721 in words is "two hundred twenty-two billion, six hundred eight million, five hundred seventy-two thousand, seven hundred twenty-one".