111321045 has 24 divisors (see below), whose sum is σ = 210498912. Its totient is φ = 53973600.

The previous prime is 111320999. The next prime is 111321047. The reversal of 111321045 is 540123111.

111321045 = 101² + 102² + ... + 694².

It is not a de Polignac number, because 111321045 - 2⁷ = 111320917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111321047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111951 + ... + 112940.

It is an arithmetic number, because the mean of its divisors is an integer number (8770788).

Almost surely, 2^111321045 is an apocalyptic number.

111321045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111321045 is a deficient number, since it is larger than the sum of its proper divisors (99177867).

111321045 is a wasteful number, since it uses less digits than its factorization.

111321045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224913 (or 224910 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 111321045 is about 10550.8788733451. The cubic root of 111321045 is about 481.0524433406.

Adding to 111321045 its reverse (540123111), we get a palindrome (651444156).

The spelling of 111321045 in words is "one hundred eleven million, three hundred twenty-one thousand, forty-five".