2243213121 has 32 divisors (see below), whose sum is σ = 3286407168. Its totient is φ = 1355316480.

The previous prime is 2243213107. The next prime is 2243213123. The reversal of 2243213121 is 1213123422.

It is not a de Polignac number, because 2243213121 - 2¹¹ = 2243211073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2243213123) 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, 148500 + ... + 162906.

It is an arithmetic number, because the mean of its divisors is an integer number (102700224).

Almost surely, 2^2243213121 is an apocalyptic number.

It is an amenable number.

2243213121 is a deficient number, since it is larger than the sum of its proper divisors (1043194047).

2243213121 is a wasteful number, since it uses less digits than its factorization.

2243213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14541.

The product of its digits is 576, while the sum is 21.

The square root of 2243213121 is about 47362.5708867245. The cubic root of 2243213121 is about 1309.0518401714.

Adding to 2243213121 its reverse (1213123422), we get a palindrome (3456336543).

It can be divided in two parts, 22432 and 13121, that added together give a palindrome (35553).

The spelling of 2243213121 in words is "two billion, two hundred forty-three million, two hundred thirteen thousand, one hundred twenty-one".