111203111213 has 16 divisors (see below), whose sum is σ = 118731594240. Its totient is φ = 103842874800.

The previous prime is 111203111101. The next prime is 111203111249. The reversal of 111203111213 is 312111302111.

It is a cyclic number.

It is not a de Polignac number, because 111203111213 - 2¹⁰ = 111203110189 is a prime.

It is a super-2 number, since 2×111203111213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111203111191 and 111203111200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111203119213) 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, 9473558 + ... + 9485288.

It is an arithmetic number, because the mean of its divisors is an integer number (7420724640).

Almost surely, 2^111203111213 is an apocalyptic number.

It is an amenable number.

111203111213 is a deficient number, since it is larger than the sum of its proper divisors (7528483027).

111203111213 is a wasteful number, since it uses less digits than its factorization.

111203111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18848.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111203111213 its reverse (312111302111), we get a palindrome (423314413324).

The spelling of 111203111213 in words is "one hundred eleven billion, two hundred three million, one hundred eleven thousand, two hundred thirteen".