112121110138 has 16 divisors (see below), whose sum is σ = 172736942760. Its totient is φ = 54542301696.

The previous prime is 112121110109. The next prime is 112121110139. The reversal of 112121110138 is 831011121211.

It can be written as a sum of positive squares in 4 ways, for example, as 72079899529 + 40041210609 = 268477^2 + 200103^2 .

It is a super-2 number, since 2×112121110138² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (112121110139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1789078 + ... + 1850686.

Almost surely, 2^112121110138 is an apocalyptic number.

112121110138 is a deficient number, since it is larger than the sum of its proper divisors (60615832622).

112121110138 is a wasteful number, since it uses less digits than its factorization.

112121110138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86241.

The product of its (nonzero) digits is 96, while the sum is 22.

Adding to 112121110138 its reverse (831011121211), we get a palindrome (943132231349).

The spelling of 112121110138 in words is "one hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, one hundred thirty-eight".