121263203 has 4 divisors (see below), whose sum is σ = 122077200. Its totient is φ = 120449208.

The previous prime is 121263151. The next prime is 121263211. The reversal of 121263203 is 302362121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302362121 = 2957 ⋅102253.

It is a cyclic number.

It is not a de Polignac number, because 121263203 - 2¹⁴ = 121246819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121263223) 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, 406775 + ... + 407072.

It is an arithmetic number, because the mean of its divisors is an integer number (30519300).

Almost surely, 2^121263203 is an apocalyptic number.

121263203 is a deficient number, since it is larger than the sum of its proper divisors (813997).

121263203 is an equidigital number, since it uses as much as digits as its factorization.

121263203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813996.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 121263203 is about 11011.9572738001. The cubic root of 121263203 is about 494.9671140959.

The spelling of 121263203 in words is "one hundred twenty-one million, two hundred sixty-three thousand, two hundred three".