2221125 has 16 divisors (see below), whose sum is σ = 3696576. Its totient is φ = 1184400.

The previous prime is 2221111. The next prime is 2221127. The reversal of 2221125 is 5211222.

It is not a de Polignac number, because 2221125 - 2⁶ = 2221061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2587 + ... + 3336.

It is an arithmetic number, because the mean of its divisors is an integer number (231036).

2^2221125 is an apocalyptic number.

2221125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2221125 is a deficient number, since it is larger than the sum of its proper divisors (1475451).

2221125 is an equidigital number, since it uses as much as digits as its factorization.

2221125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5941 (or 5931 counting only the distinct ones).

The product of its digits is 80, while the sum is 15.

The square root of 2221125 is about 1490.3439200399. The cubic root of 2221125 is about 130.4741071043.

Adding to 2221125 its reverse (5211222), we get a palindrome (7432347).

It can be divided in two parts, 2221 and 125, that added together give a triangular number (2346 = T₆₈).

The spelling of 2221125 in words is "two million, two hundred twenty-one thousand, one hundred twenty-five".