111252321 has 12 divisors (see below), whose sum is σ = 161628948. Its totient is φ = 73738464.

The previous prime is 111252319. The next prime is 111252329. The reversal of 111252321 is 123252111.

It can be written as a sum of positive squares in 2 ways, for example, as 98010000 + 13242321 = 9900^2 + 3639^2 .

It is not a de Polignac number, because 111252321 - 2¹ = 111252319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111252294 and 111252303.

It is not an unprimeable number, because it can be changed into a prime (111252329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34170 + ... + 37283.

It is an arithmetic number, because the mean of its divisors is an integer number (13469079).

Almost surely, 2^111252321 is an apocalyptic number.

It is an amenable number.

111252321 is a deficient number, since it is larger than the sum of its proper divisors (50376627).

111252321 is a wasteful number, since it uses less digits than its factorization.

111252321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71632 (or 71629 counting only the distinct ones).

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

The square root of 111252321 is about 10547.6215802426. The cubic root of 111252321 is about 480.9534304552.

The spelling of 111252321 in words is "one hundred eleven million, two hundred fifty-two thousand, three hundred twenty-one".