11202020203 has 4 divisors (see below), whose sum is σ = 12220385688. Its totient is φ = 10183654720.

The previous prime is 11202020197. The next prime is 11202020231. The reversal of 11202020203 is 30202020211.

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-11202020203 is a prime.

It is a super-2 number, since 2×11202020203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11202020293) 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, 509182726 + ... + 509182747.

It is an arithmetic number, because the mean of its divisors is an integer number (3055096422).

Almost surely, 2^11202020203 is an apocalyptic number.

11202020203 is a deficient number, since it is larger than the sum of its proper divisors (1018365485).

11202020203 is a wasteful number, since it uses less digits than its factorization.

11202020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018365484.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 11202020203 its reverse (30202020211), we get a palindrome (41404040414).

The spelling of 11202020203 in words is "eleven billion, two hundred two million, twenty thousand, two hundred three".