100231133221 has 32 divisors (see below), whose sum is σ = 110330615808. Its totient is φ = 90686069760.

The previous prime is 100231133201. The next prime is 100231133237. The reversal of 100231133221 is 122331132001.

It is not a de Polignac number, because 100231133221 - 2³³ = 91641198629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100231133201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11525751 + ... + 11534443.

It is an arithmetic number, because the mean of its divisors is an integer number (3447831744).

Almost surely, 2^100231133221 is an apocalyptic number.

It is an amenable number.

100231133221 is a deficient number, since it is larger than the sum of its proper divisors (10099482587).

100231133221 is a wasteful number, since it uses less digits than its factorization.

100231133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 100231133221 its reverse (122331132001), we get a palindrome (222562265222).

The spelling of 100231133221 in words is "one hundred billion, two hundred thirty-one million, one hundred thirty-three thousand, two hundred twenty-one".