7166221201 has 4 divisors (see below), whose sum is σ = 7332877552. Its totient is φ = 6999564852.

The previous prime is 7166221199. The next prime is 7166221247. The reversal of 7166221201 is 1021226617.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7166221201 - 2¹ = 7166221199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7166221201.

It is not an unprimeable number, because it can be changed into a prime (7166221301) 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, 83328111 + ... + 83328196.

It is an arithmetic number, because the mean of its divisors is an integer number (1833219388).

Almost surely, 2^7166221201 is an apocalyptic number.

It is an amenable number.

7166221201 is a deficient number, since it is larger than the sum of its proper divisors (166656351).

7166221201 is a wasteful number, since it uses less digits than its factorization.

7166221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166656350.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 7166221201 is about 84653.5362580914. The cubic root of 7166221201 is about 1927.9543056360.

Adding to 7166221201 its reverse (1021226617), we get a palindrome (8187447818).

The spelling of 7166221201 in words is "seven billion, one hundred sixty-six million, two hundred twenty-one thousand, two hundred one".