121003023424 has 56 divisors (see below), whose sum is σ = 242399848448. Its totient is φ = 59927454720.

The previous prime is 121003023413. The next prime is 121003023451. The reversal of 121003023424 is 424320300121.

It is a junction number, because it is equal to n+sod(n) for n = 121003023395 and 121003023404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5116972 + ... + 5140564.

Almost surely, 2^121003023424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121003023424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121199924224).

121003023424 is an abundant number, since it is smaller than the sum of its proper divisors (121396825024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121003023424 is a wasteful number, since it uses less digits than its factorization.

121003023424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24363 (or 24353 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 121003023424 its reverse (424320300121), we get a palindrome (545323323545).

The spelling of 121003023424 in words is "one hundred twenty-one billion, three million, twenty-three thousand, four hundred twenty-four".