2222156081 has 2 divisors, whose sum is σ = 2222156082. Its totient is φ = 2222156080.

The previous prime is 2222156033. The next prime is 2222156087. The reversal of 2222156081 is 1806512222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1184736400 + 1037419681 = 34420^2 + 32209^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222156081 - 2²² = 2217961777 is a prime.

It is a super-2 number, since 2×2222156081² = 9875955296650557122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2222156087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111078040 + 1111078041.

It is an arithmetic number, because the mean of its divisors is an integer number (1111078041).

Almost surely, 2^2222156081 is an apocalyptic number.

It is an amenable number.

2222156081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222156081 is an equidigital number, since it uses as much as digits as its factorization.

2222156081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 2222156081 is about 47139.7505402818. The cubic root of 2222156081 is about 1304.9429335546.

The spelling of 2222156081 in words is "two billion, two hundred twenty-two million, one hundred fifty-six thousand, eighty-one".