100221120101 has 4 divisors (see below), whose sum is σ = 100537275372. Its totient is φ = 99904964832.

The previous prime is 100221120061. The next prime is 100221120107. The reversal of 100221120101 is 101021122001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50737562500 + 49483557601 = 225250^2 + 222449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100221120101 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 (100221120107) 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, 158077160 + ... + 158077793.

It is an arithmetic number, because the mean of its divisors is an integer number (25134318843).

Almost surely, 2^100221120101 is an apocalyptic number.

It is an amenable number.

100221120101 is a deficient number, since it is larger than the sum of its proper divisors (316155271).

100221120101 is an equidigital number, since it uses as much as digits as its factorization.

100221120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316155270.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100221120101 its reverse (101021122001), we get a palindrome (201242242102).

The spelling of 100221120101 in words is "one hundred billion, two hundred twenty-one million, one hundred twenty thousand, one hundred one".