7226245021 has 2 divisors, whose sum is σ = 7226245022. Its totient is φ = 7226245020.

The previous prime is 7226244973. The next prime is 7226245031. The reversal of 7226245021 is 1205426227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5095960996 + 2130284025 = 71386^2 + 46155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7226245021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7226245031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3613122510 + 3613122511.

It is an arithmetic number, because the mean of its divisors is an integer number (3613122511).

Almost surely, 2^7226245021 is an apocalyptic number.

It is an amenable number.

7226245021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7226245021 is an equidigital number, since it uses as much as digits as its factorization.

7226245021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 7226245021 is about 85007.3233374631. The cubic root of 7226245021 is about 1933.3221546685.

The spelling of 7226245021 in words is "seven billion, two hundred twenty-six million, two hundred forty-five thousand, twenty-one".