222021113 has 2 divisors, whose sum is σ = 222021114. Its totient is φ = 222021112.

The previous prime is 222021103. The next prime is 222021131. The reversal of 222021113 is 311120222.

It is a happy number.

Together with next prime (222021131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157828969 + 64192144 = 12563^2 + 8012^2 .

It is a cyclic number.

It is not a de Polignac number, because 222021113 - 2⁸ = 222020857 is a prime.

It is not a weakly prime, because it can be changed into another prime (222021103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010556 + 111010557.

It is an arithmetic number, because the mean of its divisors is an integer number (111010557).

Almost surely, 2^222021113 is an apocalyptic number.

It is an amenable number.

222021113 is a deficient number, since it is larger than the sum of its proper divisors (1).

222021113 is an equidigital number, since it uses as much as digits as its factorization.

222021113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 222021113 is about 14900.3729147965. The cubic root of 222021113 is about 605.5240892751.

Adding to 222021113 its reverse (311120222), we get a palindrome (533141335).

The spelling of 222021113 in words is "two hundred twenty-two million, twenty-one thousand, one hundred thirteen".