111031021223 has 4 divisors (see below), whose sum is σ = 111032605800. Its totient is φ = 111029436648.

The previous prime is 111031021219. The next prime is 111031021243. The reversal of 111031021223 is 322120130111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111031021223 - 2² = 111031021219 is a prime.

It is a super-3 number, since 3×111031021223³ (a number of 34 digits) contains 333 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 (111031021243) 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, 682073 + ... + 829026.

It is an arithmetic number, because the mean of its divisors is an integer number (27758151450).

Almost surely, 2^111031021223 is an apocalyptic number.

111031021223 is a deficient number, since it is larger than the sum of its proper divisors (1584577).

111031021223 is an equidigital number, since it uses as much as digits as its factorization.

111031021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584576.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111031021223 its reverse (322120130111), we get a palindrome (433151151334).

The spelling of 111031021223 in words is "one hundred eleven billion, thirty-one million, twenty-one thousand, two hundred twenty-three".