2221124989 has 2 divisors, whose sum is σ = 2221124990. Its totient is φ = 2221124988.

The previous prime is 2221124981. The next prime is 2221125077. The reversal of 2221124989 is 9894211222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2176968964 + 44156025 = 46658^2 + 6645^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221124989 - 2³ = 2221124981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221124981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110562494 + 1110562495.

It is an arithmetic number, because the mean of its divisors is an integer number (1110562495).

Almost surely, 2^2221124989 is an apocalyptic number.

It is an amenable number.

2221124989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221124989 is an equidigital number, since it uses as much as digits as its factorization.

2221124989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The square root of 2221124989 is about 47128.8127263991. The cubic root of 2221124989 is about 1304.7410688892.

It can be divided in two parts, 222 and 1124989, that added together give a palindrome (1125211).

The spelling of 2221124989 in words is "two billion, two hundred twenty-one million, one hundred twenty-four thousand, nine hundred eighty-nine".