2402013221 has 2 divisors, whose sum is σ = 2402013222. Its totient is φ = 2402013220.

The previous prime is 2402013199. The next prime is 2402013223. The reversal of 2402013221 is 1223102042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1486950721 + 915062500 = 38561^2 + 30250^2 .

It is a cyclic number.

It is not a de Polignac number, because 2402013221 - 2¹⁴ = 2401996837 is a prime.

Together with 2402013223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2402013221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2402013223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1201006610 + 1201006611.

It is an arithmetic number, because the mean of its divisors is an integer number (1201006611).

Almost surely, 2^2402013221 is an apocalyptic number.

It is an amenable number.

2402013221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2402013221 is an equidigital number, since it uses as much as digits as its factorization.

2402013221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2402013221 is about 49010.3378992637. The cubic root of 2402013221 is about 1339.2401612222.

Adding to 2402013221 its reverse (1223102042), we get a palindrome (3625115263).

The spelling of 2402013221 in words is "two billion, four hundred two million, thirteen thousand, two hundred twenty-one".