121233407 has 4 divisors (see below), whose sum is σ = 121436400. Its totient is φ = 121030416.

The previous prime is 121233401. The next prime is 121233421. The reversal of 121233407 is 704332121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704332121 = 31 ⋅22720391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121233407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121233401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100598 + ... + 101795.

It is an arithmetic number, because the mean of its divisors is an integer number (30359100).

Almost surely, 2^121233407 is an apocalyptic number.

121233407 is a deficient number, since it is larger than the sum of its proper divisors (202993).

121233407 is an equidigital number, since it uses as much as digits as its factorization.

121233407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202992.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 121233407 is about 11010.6042976759. The cubic root of 121233407 is about 494.9265707492.

Adding to 121233407 its reverse (704332121), we get a palindrome (825565528).

The spelling of 121233407 in words is "one hundred twenty-one million, two hundred thirty-three thousand, four hundred seven".