203220120113 has 4 divisors (see below), whose sum is σ = 205119373680. Its totient is φ = 201320866548.

The previous prime is 203220120109. The next prime is 203220120127. The reversal of 203220120113 is 311021022302.

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 not a de Polignac number, because 203220120113 - 2² = 203220120109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203220120091 and 203220120100.

It is not an unprimeable number, because it can be changed into a prime (203220120413) 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, 949626623 + ... + 949626836.

It is an arithmetic number, because the mean of its divisors is an integer number (51279843420).

Almost surely, 2^203220120113 is an apocalyptic number.

It is an amenable number.

203220120113 is a deficient number, since it is larger than the sum of its proper divisors (1899253567).

203220120113 is a wasteful number, since it uses less digits than its factorization.

203220120113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899253566.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 203220120113 its reverse (311021022302), we get a palindrome (514241142415).

The spelling of 203220120113 in words is "two hundred three billion, two hundred twenty million, one hundred twenty thousand, one hundred thirteen".