3622121 has 2 divisors, whose sum is σ = 3622122. Its totient is φ = 3622120.

The previous prime is 3622111. The next prime is 3622123. The reversal of 3622121 is 1212263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2496400 + 1125721 = 1580^2 + 1061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3622121 is a prime.

It is a Sophie Germain prime.

Together with 3622123, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3622121.

It is not a weakly prime, because it can be changed into another prime (3622123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1811060 + 1811061.

It is an arithmetic number, because the mean of its divisors is an integer number (1811061).

Almost surely, 2^3622121 is an apocalyptic number.

It is an amenable number.

3622121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3622121 is an equidigital number, since it uses as much as digits as its factorization.

3622121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 17.

The square root of 3622121 is about 1903.1870638484. The cubic root of 3622121 is about 153.5751629265.

Adding to 3622121 its reverse (1212263), we get a palindrome (4834384).

The spelling of 3622121 in words is "three million, six hundred twenty-two thousand, one hundred twenty-one".