100121200023121 has 4 divisors (see below), whose sum is σ = 100121393516544. Its totient is φ = 100121006529700.

The previous prime is 100121200023113. The next prime is 100121200023179. The reversal of 100121200023121 is 121320002121001.

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 not a de Polignac number, because 100121200023121 - 2³ = 100121200023113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100121200023095 and 100121200023104.

It is not an unprimeable number, because it can be changed into a prime (100121200021121) 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, 95968465 + ... + 97006126.

It is an arithmetic number, because the mean of its divisors is an integer number (25030348379136).

Almost surely, 2^{100121200023121} is an apocalyptic number.

It is an amenable number.

100121200023121 is a deficient number, since it is larger than the sum of its proper divisors (193493423).

100121200023121 is an equidigital number, since it uses as much as digits as its factorization.

100121200023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193493422.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 100121200023121 its reverse (121320002121001), we get a palindrome (221441202144122).

The spelling of 100121200023121 in words is "one hundred trillion, one hundred twenty-one billion, two hundred million, twenty-three thousand, one hundred twenty-one".