7714982221 has 4 divisors (see below), whose sum is σ = 7923495292. Its totient is φ = 7506469152.

The previous prime is 7714982101. The next prime is 7714982239. The reversal of 7714982221 is 1222894177.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5832376900 + 1882605321 = 76370^2 + 43389^2 .

It is a cyclic number.

It is not a de Polignac number, because 7714982221 - 2¹¹ = 7714980173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7714982251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104256480 + ... + 104256553.

It is an arithmetic number, because the mean of its divisors is an integer number (1980873823).

Almost surely, 2^7714982221 is an apocalyptic number.

It is an amenable number.

7714982221 is a deficient number, since it is larger than the sum of its proper divisors (208513071).

7714982221 is a wasteful number, since it uses less digits than its factorization.

7714982221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208513070.

The product of its digits is 112896, while the sum is 43.

The square root of 7714982221 is about 87834.9715147674. The cubic root of 7714982221 is about 1975.9607328990.

The spelling of 7714982221 in words is "seven billion, seven hundred fourteen million, nine hundred eighty-two thousand, two hundred twenty-one".