121039121203 has 24 divisors (see below), whose sum is σ = 165416111280. Its totient is φ = 87061101120.

The previous prime is 121039121141. The next prime is 121039121207. The reversal of 121039121203 is 302121930121.

It is not a de Polignac number, because 121039121203 - 2²¹ = 121037024051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121039121207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8630008 + ... + 8644021.

It is an arithmetic number, because the mean of its divisors is an integer number (6892337970).

Almost surely, 2^121039121203 is an apocalyptic number.

121039121203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121039121203 is a deficient number, since it is larger than the sum of its proper divisors (44376990077).

121039121203 is a wasteful number, since it uses less digits than its factorization.

121039121203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17274067 (or 17274060 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

It can be divided in two parts, 121039 and 121203, that added together give a palindrome (242242).

The spelling of 121039121203 in words is "one hundred twenty-one billion, thirty-nine million, one hundred twenty-one thousand, two hundred three".