11162212057 has 4 divisors (see below), whose sum is σ = 11287630260. Its totient is φ = 11036793856.

The previous prime is 11162212043. The next prime is 11162212097. The reversal of 11162212057 is 75021226111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7255462041 + 3906750016 = 85179^2 + 62504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11162212057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11162212037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62708968 + ... + 62709145.

It is an arithmetic number, because the mean of its divisors is an integer number (2821907565).

Almost surely, 2^11162212057 is an apocalyptic number.

It is an amenable number.

11162212057 is a deficient number, since it is larger than the sum of its proper divisors (125418203).

11162212057 is an equidigital number, since it uses as much as digits as its factorization.

11162212057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125418202.

The product of its (nonzero) digits is 1680, while the sum is 28.

Adding to 11162212057 its reverse (75021226111), we get a palindrome (86183438168).

The spelling of 11162212057 in words is "eleven billion, one hundred sixty-two million, two hundred twelve thousand, fifty-seven".