1212013203 has 4 divisors (see below), whose sum is σ = 1616017608. Its totient is φ = 808008800.

The previous prime is 1212013189. The next prime is 1212013217. The reversal of 1212013203 is 3023102121.

1212013203 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1212013189) and next prime (1212013217).

It is a cyclic number.

It is not a de Polignac number, because 1212013203 - 2⁶ = 1212013139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212013273) 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, 202002198 + ... + 202002203.

It is an arithmetic number, because the mean of its divisors is an integer number (404004402).

Almost surely, 2^1212013203 is an apocalyptic number.

1212013203 is a deficient number, since it is larger than the sum of its proper divisors (404004405).

1212013203 is an equidigital number, since it uses as much as digits as its factorization.

1212013203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404004404.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1212013203 is about 34813.9799936750. The cubic root of 1212013203 is about 1066.1928937767.

Adding to 1212013203 its reverse (3023102121), we get a palindrome (4235115324).

The spelling of 1212013203 in words is "one billion, two hundred twelve million, thirteen thousand, two hundred three".