222152081 has 2 divisors, whose sum is σ = 222152082. Its totient is φ = 222152080.

The previous prime is 222152059. The next prime is 222152089. The reversal of 222152081 is 180251222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148449856 + 73702225 = 12184^2 + 8585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222152081 is a prime.

It is a super-2 number, since 2×222152081² = 98703094185261122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222152089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111076040 + 111076041.

It is an arithmetic number, because the mean of its divisors is an integer number (111076041).

Almost surely, 2^222152081 is an apocalyptic number.

It is an amenable number.

222152081 is a deficient number, since it is larger than the sum of its proper divisors (1).

222152081 is an equidigital number, since it uses as much as digits as its factorization.

222152081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 222152081 is about 14904.7670562139. The cubic root of 222152081 is about 605.6431300417.

The spelling of 222152081 in words is "two hundred twenty-two million, one hundred fifty-two thousand, eighty-one".