100121323213 has 24 divisors (see below), whose sum is σ = 108156707360. Its totient is φ = 92424758400.

The previous prime is 100121323147. The next prime is 100121323223. The reversal of 100121323213 is 312323121001.

It is a de Polignac number, because none of the positive numbers 2^k-100121323213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121323223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37399231 + ... + 37401907.

Almost surely, 2^100121323213 is an apocalyptic number.

It is an amenable number.

100121323213 is a deficient number, since it is larger than the sum of its proper divisors (8035384147).

100121323213 is a wasteful number, since it uses less digits than its factorization.

100121323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949 (or 3908 counting only the distinct ones).

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

Adding to 100121323213 its reverse (312323121001), we get a palindrome (412444444214).

The spelling of 100121323213 in words is "one hundred billion, one hundred twenty-one million, three hundred twenty-three thousand, two hundred thirteen".