100112120210021 has 4 divisors (see below), whose sum is σ = 100113416421600. Its totient is φ = 100110823998444.

The previous prime is 100112120210017. The next prime is 100112120210117. The reversal of 100112120210021 is 120012021211001.

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 100112120210021 - 2² = 100112120210017 is a prime.

It is a super-2 number, since 2×100112120210021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100112120209978 and 100112120210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100112120210621) 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, 647989931 + ... + 648144408.

It is an arithmetic number, because the mean of its divisors is an integer number (25028354105400).

Almost surely, 2^{100112120210021} is an apocalyptic number.

It is an amenable number.

100112120210021 is a deficient number, since it is larger than the sum of its proper divisors (1296211579).

100112120210021 is an equidigital number, since it uses as much as digits as its factorization.

100112120210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296211578.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100112120210021 its reverse (120012021211001), we get a palindrome (220124141421022).

The spelling of 100112120210021 in words is "one hundred trillion, one hundred twelve billion, one hundred twenty million, two hundred ten thousand, twenty-one".