203202130111 has 4 divisors (see below), whose sum is σ = 203357603592. Its totient is φ = 203046656632.

The previous prime is 203202130091. The next prime is 203202130123. The reversal of 203202130111 is 111031202302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203202130111 is a prime.

It is a super-2 number, since 2×203202130111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203202130511) 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, 77734780 + ... + 77737393.

It is an arithmetic number, because the mean of its divisors is an integer number (50839400898).

Almost surely, 2^203202130111 is an apocalyptic number.

203202130111 is a deficient number, since it is larger than the sum of its proper divisors (155473481).

203202130111 is a wasteful number, since it uses less digits than its factorization.

203202130111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155473480.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 203202130111 its reverse (111031202302), we get a palindrome (314233332413).

The spelling of 203202130111 in words is "two hundred three billion, two hundred two million, one hundred thirty thousand, one hundred eleven".