111220023213 has 32 divisors (see below), whose sum is σ = 181773002880. Its totient is φ = 66773738880.

The previous prime is 111220023199. The next prime is 111220023217. The reversal of 111220023213 is 312320022111.

It is not a de Polignac number, because 111220023213 - 2⁴ = 111220023197 is a prime.

It is a super-3 number, since 3×111220023213³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220023217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3849831 + ... + 3878612.

It is an arithmetic number, because the mean of its divisors is an integer number (5680406340).

Almost surely, 2^111220023213 is an apocalyptic number.

111220023213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

111220023213 is a deficient number, since it is larger than the sum of its proper divisors (70552979667).

111220023213 is a wasteful number, since it uses less digits than its factorization.

111220023213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7728506 (or 7728500 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 111220023213 its reverse (312320022111), we get a palindrome (423540045324).

The spelling of 111220023213 in words is "one hundred eleven billion, two hundred twenty million, twenty-three thousand, two hundred thirteen".