220112001100021 has 32 divisors (see below), whose sum is σ = 242560630512000. Its totient is φ = 198936533682432.

The previous prime is 220112001099959. The next prime is 220112001100031. The reversal of 220112001100021 is 120001100211022.

It is a de Polignac number, because none of the positive numbers 2^k-220112001100021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220112001099974 and 220112001100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220112001100031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8377375 + ... + 22592131.

It is an arithmetic number, because the mean of its divisors is an integer number (7580019703500).

Almost surely, 2^{220112001100021} is an apocalyptic number.

It is an amenable number.

220112001100021 is a deficient number, since it is larger than the sum of its proper divisors (22448629411979).

220112001100021 is a wasteful number, since it uses less digits than its factorization.

220112001100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14215141.

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

Adding to 220112001100021 its reverse (120001100211022), we get a palindrome (340113101311043).

It can be divided in two parts, 220112001 and 100021, that added together give a palindrome (220212022).

The spelling of 220112001100021 in words is "two hundred twenty trillion, one hundred twelve billion, one million, one hundred thousand, twenty-one".