2229121 has 2 divisors, whose sum is σ = 2229122. Its totient is φ = 2229120.

The previous prime is 2229119. The next prime is 2229133. The reversal of 2229121 is 1219222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1354896 + 874225 = 1164^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 2229121 - 2¹ = 2229119 is a prime.

Together with 2229119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2259121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1114560 + 1114561.

It is an arithmetic number, because the mean of its divisors is an integer number (1114561).

2^2229121 is an apocalyptic number.

It is an amenable number.

2229121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2229121 is an equidigital number, since it uses as much as digits as its factorization.

2229121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 2229121 is about 1493.0241123304. The cubic root of 2229121 is about 130.6304875483.

The spelling of 2229121 in words is "two million, two hundred twenty-nine thousand, one hundred twenty-one".