203221132013 has 4 divisors (see below), whose sum is σ = 203282364960. Its totient is φ = 203159899068.

The previous prime is 203221132003. The next prime is 203221132111. The reversal of 203221132013 is 310231122302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203221132013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203221132003) 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, 30611495 + ... + 30618132.

It is an arithmetic number, because the mean of its divisors is an integer number (50820591240).

Almost surely, 2^203221132013 is an apocalyptic number.

It is an amenable number.

203221132013 is a deficient number, since it is larger than the sum of its proper divisors (61232947).

203221132013 is an equidigital number, since it uses as much as digits as its factorization.

203221132013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61232946.

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

Adding to 203221132013 its reverse (310231122302), we get a palindrome (513452254315).

The spelling of 203221132013 in words is "two hundred three billion, two hundred twenty-one million, one hundred thirty-two thousand, thirteen".