7221239602 has 4 divisors (see below), whose sum is σ = 10831859406. Its totient is φ = 3610619800.

The previous prime is 7221239591. The next prime is 7221239609. The reversal of 7221239602 is 2069321227.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5844755401 + 1376484201 = 76451^2 + 37101^2 .

It is not an unprimeable number, because it can be changed into a prime (7221239609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805309899 + ... + 1805309902.

Almost surely, 2^7221239602 is an apocalyptic number.

7221239602 is a deficient number, since it is larger than the sum of its proper divisors (3610619804).

7221239602 is a wasteful number, since it uses less digits than its factorization.

7221239602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610619803.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 7221239602 is about 84977.8771328162. The cubic root of 7221239602 is about 1932.8756653956.

The spelling of 7221239602 in words is "seven billion, two hundred twenty-one million, two hundred thirty-nine thousand, six hundred two".