100221133130123 has 4 divisors (see below), whose sum is σ = 100223814382440. Its totient is φ = 100218451877808.

The previous prime is 100221133130099. The next prime is 100221133130189. The reversal of 100221133130123 is 321031331122001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100221133130123 - 2⁸ = 100221133129867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100221133130623) 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, 1340570090 + ... + 1340644847.

It is an arithmetic number, because the mean of its divisors is an integer number (25055953595610).

Almost surely, 2^{100221133130123} is an apocalyptic number.

100221133130123 is a deficient number, since it is larger than the sum of its proper divisors (2681252317).

100221133130123 is an equidigital number, since it uses as much as digits as its factorization.

100221133130123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681252316.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 100221133130123 its reverse (321031331122001), we get a palindrome (421252464252124).

The spelling of 100221133130123 in words is "one hundred trillion, two hundred twenty-one billion, one hundred thirty-three million, one hundred thirty thousand, one hundred twenty-three".