121002542193 has 16 divisors (see below), whose sum is σ = 173763845696. Its totient is φ = 74455986240.

The previous prime is 121002542123. The next prime is 121002542201. The reversal of 121002542193 is 391245200121.

It is not a de Polignac number, because 121002542193 - 2²⁰ = 121001493617 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 121002542193.

It is not an unprimeable number, because it can be changed into a prime (121002542113) 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, 280746 + ... + 566412.

It is an arithmetic number, because the mean of its divisors is an integer number (10860240356).

Almost surely, 2^121002542193 is an apocalyptic number.

121002542193 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121002542193 is a deficient number, since it is larger than the sum of its proper divisors (52761303503).

121002542193 is a wasteful number, since it uses less digits than its factorization.

121002542193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296544.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 121002542193 in words is "one hundred twenty-one billion, two million, five hundred forty-two thousand, one hundred ninety-three".