100110110021 has 4 divisors (see below), whose sum is σ = 105379063200. Its totient is φ = 94841156844.

The previous prime is 100110109973. The next prime is 100110110029. The reversal of 100110110021 is 120011011001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100110110021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100110109990 and 100110110008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100110110029) 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, 2634476561 + ... + 2634476598.

It is an arithmetic number, because the mean of its divisors is an integer number (26344765800).

Almost surely, 2^100110110021 is an apocalyptic number.

It is an amenable number.

100110110021 is a deficient number, since it is larger than the sum of its proper divisors (5268953179).

100110110021 is an equidigital number, since it uses as much as digits as its factorization.

100110110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268953178.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 100110110021 its reverse (120011011001), we get a palindrome (220121121022).

The spelling of 100110110021 in words is "one hundred billion, one hundred ten million, one hundred ten thousand, twenty-one".