111233134213 has 4 divisors (see below), whose sum is σ = 111234277728. Its totient is φ = 111231990700.

The previous prime is 111233134171. The next prime is 111233134217. The reversal of 111233134213 is 312431332111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 312431332111 = 83 ⋅3764232917.

It is a cyclic number.

It is not a de Polignac number, because 111233134213 - 2²¹ = 111231037061 is a prime.

It is a super-2 number, since 2×111233134213² (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 (111233134217) 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, 410731 + ... + 625432.

It is an arithmetic number, because the mean of its divisors is an integer number (27808569432).

Almost surely, 2^111233134213 is an apocalyptic number.

It is an amenable number.

111233134213 is a deficient number, since it is larger than the sum of its proper divisors (1143515).

111233134213 is a wasteful number, since it uses less digits than its factorization.

111233134213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143514.

The product of its digits is 1296, while the sum is 25.

Adding to 111233134213 its reverse (312431332111), we get a palindrome (423664466324).

The spelling of 111233134213 in words is "one hundred eleven billion, two hundred thirty-three million, one hundred thirty-four thousand, two hundred thirteen".