121301012123 has 8 divisors (see below), whose sum is σ = 121707256320. Its totient is φ = 120895180200.

The previous prime is 121301012117. The next prime is 121301012137. The reversal of 121301012123 is 321210103121.

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 121301012123 - 2¹⁰ = 121301011099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121301018123) 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, 492098 + ... + 696248.

It is an arithmetic number, because the mean of its divisors is an integer number (15213407040).

Almost surely, 2^121301012123 is an apocalyptic number.

121301012123 is a deficient number, since it is larger than the sum of its proper divisors (406244197).

121301012123 is a wasteful number, since it uses less digits than its factorization.

121301012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206137.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121301012123 its reverse (321210103121), we get a palindrome (442511115244).

The spelling of 121301012123 in words is "one hundred twenty-one billion, three hundred one million, twelve thousand, one hundred twenty-three".