100333332221 has 4 divisors (see below), whose sum is σ = 100334134944. Its totient is φ = 100332529500.

The previous prime is 100333332181. The next prime is 100333332251. The reversal of 100333332221 is 122233333001.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100333332221 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 (100333332251) 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, 169055 + ... + 478796.

It is an arithmetic number, because the mean of its divisors is an integer number (25083533736).

Almost surely, 2^100333332221 is an apocalyptic number.

It is an amenable number.

100333332221 is a deficient number, since it is larger than the sum of its proper divisors (802723).

100333332221 is an equidigital number, since it uses as much as digits as its factorization.

100333332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802722.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 100333332221 its reverse (122233333001), we get a palindrome (222566665222).

The spelling of 100333332221 in words is "one hundred billion, three hundred thirty-three million, three hundred thirty-two thousand, two hundred twenty-one".