121425203 has 4 divisors (see below), whose sum is σ = 128567880. Its totient is φ = 114282528.

The previous prime is 121425191. The next prime is 121425209. The reversal of 121425203 is 302524121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302524121 = 151 ⋅2003471.

It is a cyclic number.

It is not a de Polignac number, because 121425203 - 2¹² = 121421107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121425209) 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, 3571313 + ... + 3571346.

It is an arithmetic number, because the mean of its divisors is an integer number (32141970).

Almost surely, 2^121425203 is an apocalyptic number.

121425203 is a deficient number, since it is larger than the sum of its proper divisors (7142677).

121425203 is an equidigital number, since it uses as much as digits as its factorization.

121425203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142676.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 121425203 is about 11019.3104593709. The cubic root of 121425203 is about 495.1874309762.

Adding to 121425203 its reverse (302524121), we get a palindrome (423949324).

The spelling of 121425203 in words is "one hundred twenty-one million, four hundred twenty-five thousand, two hundred three".