111010123213 has 4 divisors (see below), whose sum is σ = 121101952608. Its totient is φ = 100918293820.

The previous prime is 111010123193. The next prime is 111010123219. The reversal of 111010123213 is 312321010111.

It is a happy number.

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: 312321010111 = 11 ⋅28392819101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111010123213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010123219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5045914681 + ... + 5045914702.

It is an arithmetic number, because the mean of its divisors is an integer number (30275488152).

Almost surely, 2^111010123213 is an apocalyptic number.

It is an amenable number.

111010123213 is a deficient number, since it is larger than the sum of its proper divisors (10091829395).

111010123213 is a wasteful number, since it uses less digits than its factorization.

111010123213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091829394.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111010123213 its reverse (312321010111), we get a palindrome (423331133324).

The spelling of 111010123213 in words is "one hundred eleven billion, ten million, one hundred twenty-three thousand, two hundred thirteen".