121101100100123 has 8 divisors (see below), whose sum is σ = 142272621096816. Its totient is φ = 101623300783200.

The previous prime is 121101100100111. The next prime is 121101100100179. The reversal of 121101100100123 is 321001001101121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121101100100123 - 2⁴ = 121101100100107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121101100100098 and 121101100100107.

It is not an unprimeable number, because it can be changed into a prime (121101100100023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423430419788 + ... + 423430420073.

It is an arithmetic number, because the mean of its divisors is an integer number (17784077637102).

Almost surely, 2^{121101100100123} is an apocalyptic number.

121101100100123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121101100100123 is a deficient number, since it is larger than the sum of its proper divisors (21171520996693).

121101100100123 is a wasteful number, since it uses less digits than its factorization.

121101100100123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846860839885.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 121101100100123 its reverse (321001001101121), we get a palindrome (442102101201244).

The spelling of 121101100100123 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred million, one hundred thousand, one hundred twenty-three".