7271668121 has 8 divisors (see below), whose sum is σ = 7428296064. Its totient is φ = 7115119920.

The previous prime is 7271668099. The next prime is 7271668153. The reversal of 7271668121 is 1218661727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7271668121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7271668181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187331 + ... + 222791.

It is an arithmetic number, because the mean of its divisors is an integer number (928537008).

Almost surely, 2^7271668121 is an apocalyptic number.

It is an amenable number.

7271668121 is a deficient number, since it is larger than the sum of its proper divisors (156627943).

7271668121 is a wasteful number, since it uses less digits than its factorization.

7271668121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39871.

The product of its digits is 56448, while the sum is 41.

The square root of 7271668121 is about 85274.0764886961. The cubic root of 7271668121 is about 1937.3645548660.

The spelling of 7271668121 in words is "seven billion, two hundred seventy-one million, six hundred sixty-eight thousand, one hundred twenty-one".