112120211121 has 4 divisors (see below), whose sum is σ = 149493614832. Its totient is φ = 74746807412.

The previous prime is 112120211107. The next prime is 112120211143. The reversal of 112120211121 is 121112021211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 112120211121 - 2⁶ = 112120211057 is a prime.

It is a super-2 number, since 2×112120211121² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 112120211121.

It is not an unprimeable number, because it can be changed into a prime (112120211221) 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, 18686701851 + ... + 18686701856.

It is an arithmetic number, because the mean of its divisors is an integer number (37373403708).

Almost surely, 2^112120211121 is an apocalyptic number.

It is an amenable number.

112120211121 is a deficient number, since it is larger than the sum of its proper divisors (37373403711).

112120211121 is an equidigital number, since it uses as much as digits as its factorization.

112120211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37373403710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 112120211121 its reverse (121112021211), we get a palindrome (233232232332).

The spelling of 112120211121 in words is "one hundred twelve billion, one hundred twenty million, two hundred eleven thousand, one hundred twenty-one".