121453203 has 16 divisors (see below), whose sum is σ = 166810880. Its totient is φ = 78545376.

The previous prime is 121453181. The next prime is 121453229. The reversal of 121453203 is 302354121.

It is not a de Polignac number, because 121453203 - 2⁶ = 121453139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121453203.

It is not an unprimeable number, because it can be changed into a prime (121453273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40626 + ... + 43512.

It is an arithmetic number, because the mean of its divisors is an integer number (10425680).

Almost surely, 2^121453203 is an apocalyptic number.

121453203 is a deficient number, since it is larger than the sum of its proper divisors (45357677).

121453203 is a wasteful number, since it uses less digits than its factorization.

121453203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 121453203 is about 11020.5808830569. The cubic root of 121453203 is about 495.2254905720.

The spelling of 121453203 in words is "one hundred twenty-one million, four hundred fifty-three thousand, two hundred three".