11112121202158 has 12 divisors (see below), whose sum is σ = 17064828644688. Its totient is φ = 5426849887620.

The previous prime is 11112121202153. The next prime is 11112121202159. The reversal of 11112121202158 is 85120212121111.

It is a super-2 number, since 2×11112121202158² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112121202153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1502446438 + ... + 1502453833.

It is an arithmetic number, because the mean of its divisors is an integer number (1422069053724).

Almost surely, 2^{11112121202158} is an apocalyptic number.

11112121202158 is a deficient number, since it is larger than the sum of its proper divisors (5952707442530).

11112121202158 is an equidigital number, since it uses as much as digits as its factorization.

11112121202158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004900359 (or 3004900316 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 28.

Adding to 11112121202158 its reverse (85120212121111), we get a palindrome (96232333323269).

The spelling of 11112121202158 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-one million, two hundred two thousand, one hundred fifty-eight".