121201203 has 12 divisors (see below), whose sum is σ = 165122120. Its totient is φ = 79077312.

The previous prime is 121201193. The next prime is 121201217. The reversal of 121201203 is 302102121.

It is not a de Polignac number, because 121201203 - 2⁴ = 121201187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121201253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2518 + ... + 15771.

Almost surely, 2^121201203 is an apocalyptic number.

121201203 is a deficient number, since it is larger than the sum of its proper divisors (43920917).

121201203 is an equidigital number, since it uses as much as digits as its factorization.

121201203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18386 (or 18339 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 121201203 is about 11009.1417921653. The cubic root of 121201203 is about 494.8827433720.

Adding to 121201203 its reverse (302102121), we get a palindrome (423303324).

The spelling of 121201203 in words is "one hundred twenty-one million, two hundred one thousand, two hundred three".