100101201221 has 4 divisors (see below), whose sum is σ = 114401372832. Its totient is φ = 85801029612.

The previous prime is 100101201199. The next prime is 100101201229. The reversal of 100101201221 is 122102101001.

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 a cyclic number.

It is not a de Polignac number, because 100101201221 - 2²⁶ = 100034092357 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 (100101201229) 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, 7150085795 + ... + 7150085808.

It is an arithmetic number, because the mean of its divisors is an integer number (28600343208).

Almost surely, 2^100101201221 is an apocalyptic number.

It is an amenable number.

100101201221 is a deficient number, since it is larger than the sum of its proper divisors (14300171611).

100101201221 is an equidigital number, since it uses as much as digits as its factorization.

100101201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14300171610.

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

Adding to 100101201221 its reverse (122102101001), we get a palindrome (222203302222).

The spelling of 100101201221 in words is "one hundred billion, one hundred one million, two hundred one thousand, two hundred twenty-one".