111113202154 has 4 divisors (see below), whose sum is σ = 166669803234. Its totient is φ = 55556601076.

The previous prime is 111113202077. The next prime is 111113202197. The reversal of 111113202154 is 451202311111.

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

It can be written as a sum of positive squares in only one way, i.e., 99368061529 + 11745140625 = 315227^2 + 108375^2 .

It is a super-2 number, since 2×111113202154² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27778300537 + ... + 27778300540.

Almost surely, 2^111113202154 is an apocalyptic number.

111113202154 is a deficient number, since it is larger than the sum of its proper divisors (55556601080).

111113202154 is an equidigital number, since it uses as much as digits as its factorization.

111113202154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55556601079.

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 111113202154 its reverse (451202311111), we get a palindrome (562315513265).

The spelling of 111113202154 in words is "one hundred eleven billion, one hundred thirteen million, two hundred two thousand, one hundred fifty-four".