2234142221 has 2 divisors, whose sum is σ = 2234142222. Its totient is φ = 2234142220.

The previous prime is 2234142181. The next prime is 2234142233. The reversal of 2234142221 is 1222414322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2210034121 + 24108100 = 47011^2 + 4910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2234142221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2234144221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1117071110 + 1117071111.

It is an arithmetic number, because the mean of its divisors is an integer number (1117071111).

Almost surely, 2^2234142221 is an apocalyptic number.

It is an amenable number.

2234142221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2234142221 is an equidigital number, since it uses as much as digits as its factorization.

2234142221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 23.

The square root of 2234142221 is about 47266.7136682888. The cubic root of 2234142221 is about 1307.2849817824.

Adding to 2234142221 its reverse (1222414322), we get a palindrome (3456556543).

The spelling of 2234142221 in words is "two billion, two hundred thirty-four million, one hundred forty-two thousand, two hundred twenty-one".