100431322221 has 32 divisors (see below), whose sum is σ = 143558811648. Its totient is φ = 62304872960.

The previous prime is 100431322217. The next prime is 100431322249. The reversal of 100431322221 is 122223134001.

It is not a de Polignac number, because 100431322221 - 2² = 100431322217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100431324221) 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 31 ways as a sum of consecutive naturals, for example, 448861 + ... + 634301.

It is an arithmetic number, because the mean of its divisors is an integer number (4486212864).

Almost surely, 2^100431322221 is an apocalyptic number.

It is an amenable number.

100431322221 is a deficient number, since it is larger than the sum of its proper divisors (43127489427).

100431322221 is a wasteful number, since it uses less digits than its factorization.

100431322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185681.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 100431322221 its reverse (122223134001), we get a palindrome (222654456222).

The spelling of 100431322221 in words is "one hundred billion, four hundred thirty-one million, three hundred twenty-two thousand, two hundred twenty-one".