2221231120237 has 2 divisors, whose sum is σ = 2221231120238. Its totient is φ = 2221231120236.

The previous prime is 2221231120201. The next prime is 2221231120259. The reversal of 2221231120237 is 7320211321222.

It is a happy number.

2221231120237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1461847846761 + 759383273476 = 1209069^2 + 871426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221231120237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221231120837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110615560118 + 1110615560119.

It is an arithmetic number, because the mean of its divisors is an integer number (1110615560119).

Almost surely, 2^{2221231120237} is an apocalyptic number.

It is an amenable number.

2221231120237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221231120237 is an equidigital number, since it uses as much as digits as its factorization.

2221231120237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 2221231120237 its reverse (7320211321222), we get a palindrome (9541442441459).

The spelling of 2221231120237 in words is "two trillion, two hundred twenty-one billion, two hundred thirty-one million, one hundred twenty thousand, two hundred thirty-seven".