2402651221 has 2 divisors, whose sum is σ = 2402651222. Its totient is φ = 2402651220.

The previous prime is 2402651183. The next prime is 2402651243. The reversal of 2402651221 is 1221562042.

2402651221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1712800996 + 689850225 = 41386^2 + 26265^2 .

It is a cyclic number.

It is not a de Polignac number, because 2402651221 - 2²³ = 2394262613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2402051221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1201325610 + 1201325611.

It is an arithmetic number, because the mean of its divisors is an integer number (1201325611).

Almost surely, 2^2402651221 is an apocalyptic number.

It is an amenable number.

2402651221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2402651221 is an equidigital number, since it uses as much as digits as its factorization.

2402651221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2402651221 is about 49016.8462979821. The cubic root of 2402651221 is about 1339.3587228212.

The spelling of 2402651221 in words is "two billion, four hundred two million, six hundred fifty-one thousand, two hundred twenty-one".