121123023130129 has 16 divisors (see below), whose sum is σ = 129190438726272. Its totient is φ = 113163396588288.

The previous prime is 121123023130097. The next prime is 121123023130141. The reversal of 121123023130129 is 921031320321121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121123023130129 - 2⁵ = 121123023130097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121123023130129.

It is not an unprimeable number, because it can be changed into a prime (121123023130169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46598334 + ... + 49128919.

It is an arithmetic number, because the mean of its divisors is an integer number (8074402420392).

Almost surely, 2^{121123023130129} is an apocalyptic number.

It is an amenable number.

121123023130129 is a deficient number, since it is larger than the sum of its proper divisors (8067415596143).

121123023130129 is a wasteful number, since it uses less digits than its factorization.

121123023130129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95727816.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 121123023130129 in words is "one hundred twenty-one trillion, one hundred twenty-three billion, twenty-three million, one hundred thirty thousand, one hundred twenty-nine".