111221253 has 48 divisors (see below), whose sum is σ = 191056320. Its totient is φ = 61459200.

The previous prime is 111221251. The next prime is 111221281. The reversal of 111221253 is 352122111.

It is not a de Polignac number, because 111221253 - 2¹ = 111221251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 114058 + ... + 115028.

It is an arithmetic number, because the mean of its divisors is an integer number (3980340).

Almost surely, 2^111221253 is an apocalyptic number.

111221253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

111221253 is a deficient number, since it is larger than the sum of its proper divisors (79835067).

111221253 is a wasteful number, since it uses less digits than its factorization.

111221253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090 (or 1087 counting only the distinct ones).

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

The square root of 111221253 is about 10546.1487283273. The cubic root of 111221253 is about 480.9086564011.

Adding to 111221253 its reverse (352122111), we get a palindrome (463343364).

The spelling of 111221253 in words is "one hundred eleven million, two hundred twenty-one thousand, two hundred fifty-three".