2221402049 has 2 divisors, whose sum is σ = 2221402050. Its totient is φ = 2221402048.

The previous prime is 2221402039. The next prime is 2221402067. The reversal of 2221402049 is 9402041222.

It is a happy number.

2221402049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2165227024 + 56175025 = 46532^2 + 7495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221402049 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221402009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110701024 + 1110701025.

It is an arithmetic number, because the mean of its divisors is an integer number (1110701025).

Almost surely, 2^2221402049 is an apocalyptic number.

It is an amenable number.

2221402049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221402049 is an equidigital number, since it uses as much as digits as its factorization.

2221402049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2221402049 is about 47131.7520255719. The cubic root of 2221402049 is about 1304.7953171542.

The spelling of 2221402049 in words is "two billion, two hundred twenty-one million, four hundred two thousand, forty-nine".