100221192021 has 8 divisors (see below), whose sum is σ = 135818883424. Its totient is φ = 65718814320.

The previous prime is 100221191999. The next prime is 100221192037. The reversal of 100221192021 is 120291122001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100221192021 - 2¹⁷ = 100221060949 is a prime.

It is a super-2 number, since 2×100221192021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221192041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273828211 + ... + 273828576.

It is an arithmetic number, because the mean of its divisors is an integer number (16977360428).

Almost surely, 2^100221192021 is an apocalyptic number.

It is an amenable number.

100221192021 is a deficient number, since it is larger than the sum of its proper divisors (35597691403).

100221192021 is an equidigital number, since it uses as much as digits as its factorization.

100221192021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547656851.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 100221192021 in words is "one hundred billion, two hundred twenty-one million, one hundred ninety-two thousand, twenty-one".