112102042421 has 4 divisors (see below), whose sum is σ = 112322282700. Its totient is φ = 111881802144.

The previous prime is 112102042397. The next prime is 112102042453. The reversal of 112102042421 is 124240201211.

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 37415164900 + 74686877521 = 193430^2 + 273289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112102042421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112102042393 and 112102042402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112102042121) 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, 110119376 + ... + 110120393.

It is an arithmetic number, because the mean of its divisors is an integer number (28080570675).

Almost surely, 2^112102042421 is an apocalyptic number.

It is an amenable number.

112102042421 is a deficient number, since it is larger than the sum of its proper divisors (220240279).

112102042421 is an equidigital number, since it uses as much as digits as its factorization.

112102042421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220240278.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 112102042421 its reverse (124240201211), we get a palindrome (236342243632).

The spelling of 112102042421 in words is "one hundred twelve billion, one hundred two million, forty-two thousand, four hundred twenty-one".