100023121101 has 4 divisors (see below), whose sum is σ = 133364161472. Its totient is φ = 66682080732.

The previous prime is 100023121097. The next prime is 100023121127. The reversal of 100023121101 is 101121320001.

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 not a de Polignac number, because 100023121101 - 2² = 100023121097 is a prime.

It is a super-2 number, since 2×100023121101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100023121151) 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, 16670520181 + ... + 16670520186.

It is an arithmetic number, because the mean of its divisors is an integer number (33341040368).

Almost surely, 2^100023121101 is an apocalyptic number.

It is an amenable number.

100023121101 is a deficient number, since it is larger than the sum of its proper divisors (33341040371).

100023121101 is an equidigital number, since it uses as much as digits as its factorization.

100023121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33341040370.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 100023121101 its reverse (101121320001), we get a palindrome (201144441102).

The spelling of 100023121101 in words is "one hundred billion, twenty-three million, one hundred twenty-one thousand, one hundred one".