112102020121 has 20 divisors (see below), whose sum is σ = 140837786852. Its totient is φ = 88696079136.

The previous prime is 112102020059. The next prime is 112102020131. The reversal of 112102020121 is 121020201211.

It can be written as a sum of positive squares in 2 ways, for example, as 58498194496 + 53603825625 = 241864^2 + 231525^2 .

It is not a de Polignac number, because 112102020121 - 2¹⁵ = 112101987353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (112102020131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1764546 + ... + 1826971.

Almost surely, 2^112102020121 is an apocalyptic number.

It is an amenable number.

112102020121 is a deficient number, since it is larger than the sum of its proper divisors (28735766731).

112102020121 is an frugal number, since it uses more digits than its factorization.

112102020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591558 (or 3591537 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 112102020121 its reverse (121020201211), we get a palindrome (233122221332).

The spelling of 112102020121 in words is "one hundred twelve billion, one hundred two million, twenty thousand, one hundred twenty-one".