222111202051 has 2 divisors, whose sum is σ = 222111202052. Its totient is φ = 222111202050.

The previous prime is 222111202021. The next prime is 222111202087. The reversal of 222111202051 is 150202111222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222111202051 - 2²⁷ = 221976984323 is a prime.

It is not a weakly prime, because it can be changed into another prime (222111202021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111055601025 + 111055601026.

It is an arithmetic number, because the mean of its divisors is an integer number (111055601026).

Almost surely, 2^222111202051 is an apocalyptic number.

222111202051 is a deficient number, since it is larger than the sum of its proper divisors (1).

222111202051 is an equidigital number, since it uses as much as digits as its factorization.

222111202051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 222111202051 its reverse (150202111222), we get a palindrome (372313313273).

The spelling of 222111202051 in words is "two hundred twenty-two billion, one hundred eleven million, two hundred two thousand, fifty-one".