2243121212 has 6 divisors (see below), whose sum is σ = 3925462128. Its totient is φ = 1121560604.

The previous prime is 2243121211. The next prime is 2243121229. The reversal of 2243121212 is 2121213422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243121211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280390148 + ... + 280390155.

It is an arithmetic number, because the mean of its divisors is an integer number (654243688).

Almost surely, 2^2243121212 is an apocalyptic number.

It is an amenable number.

2243121212 is a deficient number, since it is larger than the sum of its proper divisors (1682340916).

2243121212 is a wasteful number, since it uses less digits than its factorization.

2243121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560780307 (or 560780305 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 2243121212 is about 47361.6006063984. The cubic root of 2243121212 is about 1309.0339617559.

Adding to 2243121212 its reverse (2121213422), we get a palindrome (4364334634).

The spelling of 2243121212 in words is "two billion, two hundred forty-three million, one hundred twenty-one thousand, two hundred twelve".