2243420121 has 32 divisors (see below), whose sum is σ = 3164848128. Its totient is φ = 1411441920.

The previous prime is 2243420111. The next prime is 2243420131. The reversal of 2243420121 is 1210243422.

It is an interprime number because it is at equal distance from previous prime (2243420111) and next prime (2243420131).

It is not a de Polignac number, because 2243420121 - 2¹⁰ = 2243419097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2243420111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1472266 + ... + 1473788.

It is an arithmetic number, because the mean of its divisors is an integer number (98901504).

Almost surely, 2^2243420121 is an apocalyptic number.

It is an amenable number.

2243420121 is a deficient number, since it is larger than the sum of its proper divisors (921428007).

2243420121 is a wasteful number, since it uses less digits than its factorization.

2243420121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2243420121 is about 47364.7561062020. The cubic root of 2243420121 is about 1309.0921046465.

Adding to 2243420121 its reverse (1210243422), we get a palindrome (3453663543).

The spelling of 2243420121 in words is "two billion, two hundred forty-three million, four hundred twenty thousand, one hundred twenty-one".