2243121229 has 2 divisors, whose sum is σ = 2243121230. Its totient is φ = 2243121228.

The previous prime is 2243121211. The next prime is 2243121233. The reversal of 2243121229 is 9221213422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1764168004 + 478953225 = 42002^2 + 21885^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243121229 - 2⁹ = 2243120717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2243121197 and 2243121206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243121269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121560614 + 1121560615.

It is an arithmetic number, because the mean of its divisors is an integer number (1121560615).

Almost surely, 2^2243121229 is an apocalyptic number.

It is an amenable number.

2243121229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243121229 is an equidigital number, since it uses as much as digits as its factorization.

2243121229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 2243121229 is about 47361.6007858687. The cubic root of 2243121229 is about 1309.0339650629.

It can be divided in two parts, 22431 and 21229, that added together give a triangular number (43660 = T₂₉₅).

The spelling of 2243121229 in words is "two billion, two hundred forty-three million, one hundred twenty-one thousand, two hundred twenty-nine".