2121244 has 12 divisors (see below), whose sum is σ = 3873744. Its totient is φ = 1014464.

The previous prime is 2121241. The next prime is 2121253. The reversal of 2121244 is 4421212.

It is a super-2 number, since 2×2121244² = 8999352215072, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121241) 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, 11437 + ... + 11620.

It is an arithmetic number, because the mean of its divisors is an integer number (322812).

2^2121244 is an apocalyptic number.

It is an amenable number.

2121244 is a deficient number, since it is larger than the sum of its proper divisors (1752500).

2121244 is a wasteful number, since it uses less digits than its factorization.

2121244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23084 (or 23082 counting only the distinct ones).

The product of its digits is 128, while the sum is 16.

The square root of 2121244 is about 1456.4491065602. The cubic root of 2121244 is about 128.4882879301.

Adding to 2121244 its reverse (4421212), we get a palindrome (6542456).

Subtracting 2121244 from its reverse (4421212), we obtain a cube (2299968 = 132³).

The spelling of 2121244 in words is "two million, one hundred twenty-one thousand, two hundred forty-four".