6662311121 has 4 divisors (see below), whose sum is σ = 6662502000. Its totient is φ = 6662120244.

The previous prime is 6662311079. The next prime is 6662311129. The reversal of 6662311121 is 1211132666.

It is a happy number.

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 6662311121 - 2¹⁸ = 6662048977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6662311129) 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, 26471 + ... + 118428.

It is an arithmetic number, because the mean of its divisors is an integer number (1665625500).

Almost surely, 2^6662311121 is an apocalyptic number.

It is an amenable number.

6662311121 is a deficient number, since it is larger than the sum of its proper divisors (190879).

6662311121 is a wasteful number, since it uses less digits than its factorization.

6662311121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190878.

The product of its digits is 2592, while the sum is 29.

The square root of 6662311121 is about 81622.9815738190. The cubic root of 6662311121 is about 1881.6620959289.

Adding to 6662311121 its reverse (1211132666), we get a palindrome (7873443787).

The spelling of 6662311121 in words is "six billion, six hundred sixty-two million, three hundred eleven thousand, one hundred twenty-one".