1112213161 has 2 divisors, whose sum is σ = 1112213162. Its totient is φ = 1112213160.

The previous prime is 1112213147. The next prime is 1112213237. The reversal of 1112213161 is 1613122111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 731377936 + 380835225 = 27044^2 + 19515^2 .

It is an emirp because it is prime and its reverse (1613122111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1112213161 - 2⁵ = 1112213129 is a prime.

It is a super-2 number, since 2×1112213161² = 2474036231003223842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1112214161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556106580 + 556106581.

It is an arithmetic number, because the mean of its divisors is an integer number (556106581).

Almost surely, 2^1112213161 is an apocalyptic number.

It is an amenable number.

1112213161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112213161 is an equidigital number, since it uses as much as digits as its factorization.

1112213161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 19.

The square root of 1112213161 is about 33349.8599847136. The cubic root of 1112213161 is about 1036.0864880241.

Adding to 1112213161 its reverse (1613122111), we get a palindrome (2725335272).

The spelling of 1112213161 in words is "one billion, one hundred twelve million, two hundred thirteen thousand, one hundred sixty-one".