100112021221 has 16 divisors (see below), whose sum is σ = 103155192000. Its totient is φ = 97119595008.

The previous prime is 100112021201. The next prime is 100112021237. The reversal of 100112021221 is 122120211001.

It is a cyclic number.

It is not a de Polignac number, because 100112021221 - 2¹⁵ = 100111988453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100112021201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1972266 + ... + 2022388.

It is an arithmetic number, because the mean of its divisors is an integer number (6447199500).

Almost surely, 2^100112021221 is an apocalyptic number.

It is an amenable number.

100112021221 is a deficient number, since it is larger than the sum of its proper divisors (3043170779).

100112021221 is an equidigital number, since it uses as much as digits as its factorization.

100112021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50628.

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

Adding to 100112021221 its reverse (122120211001), we get a palindrome (222232232222).

The spelling of 100112021221 in words is "one hundred billion, one hundred twelve million, twenty-one thousand, two hundred twenty-one".