4722121 has 2 divisors, whose sum is σ = 4722122. Its totient is φ = 4722120.

The previous prime is 4722103. The next prime is 4722163. The reversal of 4722121 is 1212274.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3367225 + 1354896 = 1835^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 4722121 - 2⁹ = 4721609 is a prime.

It is not a weakly prime, because it can be changed into another prime (4722101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2361060 + 2361061.

It is an arithmetic number, because the mean of its divisors is an integer number (2361061).

Almost surely, 2^4722121 is an apocalyptic number.

It is an amenable number.

4722121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4722121 is an equidigital number, since it uses as much as digits as its factorization.

4722121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224, while the sum is 19.

The square root of 4722121 is about 2173.0441781059. The cubic root of 4722121 is about 167.7692528485.

Adding to 4722121 its reverse (1212274), we get a palindrome (5934395).

The spelling of 4722121 in words is "four million, seven hundred twenty-two thousand, one hundred twenty-one".