2221139993 has 2 divisors, whose sum is σ = 2221139994. Its totient is φ = 2221139992.

The previous prime is 2221139989. The next prime is 2221140029. The reversal of 2221139993 is 3999311222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2060433664 + 160706329 = 45392^2 + 12677^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221139993 - 2² = 2221139989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221139993.

It is not a weakly prime, because it can be changed into another prime (2221139903) 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, 1110569996 + 1110569997.

It is an arithmetic number, because the mean of its divisors is an integer number (1110569997).

Almost surely, 2^2221139993 is an apocalyptic number.

It is an amenable number.

2221139993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221139993 is an equidigital number, since it uses as much as digits as its factorization.

2221139993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 41.

The square root of 2221139993 is about 47128.9719068855. The cubic root of 2221139993 is about 1304.7440067834.

The spelling of 2221139993 in words is "two billion, two hundred twenty-one million, one hundred thirty-nine thousand, nine hundred ninety-three".