7373277221 has 2 divisors, whose sum is σ = 7373277222. Its totient is φ = 7373277220.

The previous prime is 7373277097. The next prime is 7373277239. The reversal of 7373277221 is 1227723737.

7373277221 is digitally balanced in base 3, 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., 7147857025 + 225420196 = 84545^2 + 15014^2 .

It is a cyclic number.

It is not a de Polignac number, because 7373277221 - 2³⁰ = 6299535397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7373277251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3686638610 + 3686638611.

It is an arithmetic number, because the mean of its divisors is an integer number (3686638611).

Almost surely, 2^7373277221 is an apocalyptic number.

It is an amenable number.

7373277221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7373277221 is an equidigital number, since it uses as much as digits as its factorization.

7373277221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172872, while the sum is 41.

The square root of 7373277221 is about 85867.7891936202. The cubic root of 7373277221 is about 1946.3466306537.

The spelling of 7373277221 in words is "seven billion, three hundred seventy-three million, two hundred seventy-seven thousand, two hundred twenty-one".