2122401 has 4 divisors (see below), whose sum is σ = 2829872. Its totient is φ = 1414932.

The previous prime is 2122381. The next prime is 2122409. The reversal of 2122401 is 1042212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2122401 - 2⁵ = 2122369 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353731 + ... + 353736.

It is an arithmetic number, because the mean of its divisors is an integer number (707468).

2^2122401 is an apocalyptic number.

It is an amenable number.

2122401 is a deficient number, since it is larger than the sum of its proper divisors (707471).

2122401 is an equidigital number, since it uses as much as digits as its factorization.

2122401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707470.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2122401 is about 1456.8462513251. The cubic root of 2122401 is about 128.5116443394.

Adding to 2122401 its reverse (1042212), we get a palindrome (3164613).

It can be divided in two parts, 21 and 22401, that added together give a palindrome (22422).

The spelling of 2122401 in words is "two million, one hundred twenty-two thousand, four hundred one".