100010122221 has 4 divisors (see below), whose sum is σ = 133346829632. Its totient is φ = 66673414812.

The previous prime is 100010122183. The next prime is 100010122237. The reversal of 100010122221 is 122221010001.

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 not a de Polignac number, because 100010122221 - 2³³ = 91420187629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100010122197 and 100010122206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100010122621) 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, 16668353701 + ... + 16668353706.

It is an arithmetic number, because the mean of its divisors is an integer number (33336707408).

Almost surely, 2^100010122221 is an apocalyptic number.

It is an amenable number.

100010122221 is a deficient number, since it is larger than the sum of its proper divisors (33336707411).

100010122221 is an equidigital number, since it uses as much as digits as its factorization.

100010122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33336707410.

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

Adding to 100010122221 its reverse (122221010001), we get a palindrome (222231132222).

The spelling of 100010122221 in words is "one hundred billion, ten million, one hundred twenty-two thousand, two hundred twenty-one".