100332212221 has 4 divisors (see below), whose sum is σ = 100350753052. Its totient is φ = 100313671392.

The previous prime is 100332212219. The next prime is 100332212257. The reversal of 100332212221 is 122212233001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122212233001 = 191621 ⋅637781.

It can be written as a sum of positive squares in 2 ways, for example, as 43728664996 + 56603547225 = 209114^2 + 237915^2 .

It is a cyclic number.

It is not a de Polignac number, because 100332212221 - 2¹ = 100332212219 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 (100332212521) 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, 9262296 + ... + 9273121.

It is an arithmetic number, because the mean of its divisors is an integer number (25087688263).

Almost surely, 2^100332212221 is an apocalyptic number.

It is an amenable number.

100332212221 is a deficient number, since it is larger than the sum of its proper divisors (18540831).

100332212221 is an equidigital number, since it uses as much as digits as its factorization.

100332212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18540830.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 100332212221 its reverse (122212233001), we get a palindrome (222544445222).

The spelling of 100332212221 in words is "one hundred billion, three hundred thirty-two million, two hundred twelve thousand, two hundred twenty-one".