112122102010021 has 4 divisors (see below), whose sum is σ = 113381900909100. Its totient is φ = 110862303110944.

The previous prime is 112122102009997. The next prime is 112122102010027. The reversal of 112122102010021 is 120010201221211.

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 18834610492996 + 93287491517025 = 4339886^2 + 9658545^2 .

It is a cyclic number.

It is not a de Polignac number, because 112122102010021 - 2²¹ = 112122099912869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112122102009977 and 112122102010004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112122102010027) 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, 629899449406 + ... + 629899449583.

It is an arithmetic number, because the mean of its divisors is an integer number (28345475227275).

Almost surely, 2^{112122102010021} is an apocalyptic number.

It is an amenable number.

112122102010021 is a deficient number, since it is larger than the sum of its proper divisors (1259798899079).

112122102010021 is an equidigital number, since it uses as much as digits as its factorization.

112122102010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259798899078.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 112122102010021 its reverse (120010201221211), we get a palindrome (232132303231232).

It can be divided in two parts, 11212210 and 2010021, that added together give a palindrome (13222231).

The spelling of 112122102010021 in words is "one hundred twelve trillion, one hundred twenty-two billion, one hundred two million, ten thousand, twenty-one".