2232121 has 4 divisors (see below), whose sum is σ = 2262772. Its totient is φ = 2201472.

The previous prime is 2232107. The next prime is 2232133. The reversal of 2232121 is 1212322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1022121 + 1210000 = 1011^2 + 1100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2232121 - 2⁹ = 2231609 is a prime.

It is a super-3 number, since 3×2232121³ = 33363719004449722683, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2232161) 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, 15216 + ... + 15361.

It is an arithmetic number, because the mean of its divisors is an integer number (565693).

2^2232121 is an apocalyptic number.

It is an amenable number.

2232121 is a deficient number, since it is larger than the sum of its proper divisors (30651).

2232121 is an equidigital number, since it uses as much as digits as its factorization.

2232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30650.

The product of its digits is 48, while the sum is 13.

The square root of 2232121 is about 1494.0284468510. The cubic root of 2232121 is about 130.6890630718.

Adding to 2232121 its reverse (1212322), we get a palindrome (3444443).

It can be divided in two parts, 2232 and 121, that multiplied together give a palindrome (270072).

The spelling of 2232121 in words is "two million, two hundred thirty-two thousand, one hundred twenty-one".