2402229489721 has 2 divisors, whose sum is σ = 2402229489722. Its totient is φ = 2402229489720.

The previous prime is 2402229489719. The next prime is 2402229489749. The reversal of 2402229489721 is 1279849222042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2291166595600 + 111062894121 = 1513660^2 + 333261^2 .

It is a cyclic number.

It is not a de Polignac number, because 2402229489721 - 2¹ = 2402229489719 is a prime.

Together with 2402229489719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2402229489701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1201114744860 + 1201114744861.

It is an arithmetic number, because the mean of its divisors is an integer number (1201114744861).

Almost surely, 2^{2402229489721} is an apocalyptic number.

It is an amenable number.

2402229489721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2402229489721 is an equidigital number, since it uses as much as digits as its factorization.

2402229489721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 2402229489721 in words is "two trillion, four hundred two billion, two hundred twenty-nine million, four hundred eighty-nine thousand, seven hundred twenty-one".