11203320138 has 32 divisors (see below), whose sum is σ = 22988145600. Its totient is φ = 3638643456.

The previous prime is 11203320133. The next prime is 11203320143. The reversal of 11203320138 is 83102330211.

It is an interprime number because it is at equal distance from previous prime (11203320133) and next prime (11203320143).

It is a super-2 number, since 2×11203320138² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11203320131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100033 + ... + 180036.

It is an arithmetic number, because the mean of its divisors is an integer number (718379550).

Almost surely, 2^11203320138 is an apocalyptic number.

11203320138 is an abundant number, since it is smaller than the sum of its proper divisors (11784825462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11203320138 is a wasteful number, since it uses less digits than its factorization.

11203320138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280246.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 11203320138 its reverse (83102330211), we get a palindrome (94305650349).

The spelling of 11203320138 in words is "eleven billion, two hundred three million, three hundred twenty thousand, one hundred thirty-eight".