220112100021 has 32 divisors (see below), whose sum is σ = 327667963392. Its totient is φ = 130275351360.

The previous prime is 220112100001. The next prime is 220112100053. The reversal of 220112100021 is 120001211022.

It is not a de Polignac number, because 220112100021 - 2⁶ = 220112099957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220112100001) 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, 10735846 + ... + 10756328.

It is an arithmetic number, because the mean of its divisors is an integer number (10239623856).

Almost surely, 2^220112100021 is an apocalyptic number.

It is an amenable number.

220112100021 is a deficient number, since it is larger than the sum of its proper divisors (107555863371).

220112100021 is a wasteful number, since it uses less digits than its factorization.

220112100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28113.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 220112100021 its reverse (120001211022), we get a palindrome (340113311043).

The spelling of 220112100021 in words is "two hundred twenty billion, one hundred twelve million, one hundred thousand, twenty-one".