66335111121 has 8 divisors (see below), whose sum is σ = 90328662144. Its totient is φ = 43282483760.

The previous prime is 66335111111. The next prime is 66335111131. The reversal of 66335111121 is 12111153366.

It is an interprime number because it is at equal distance from previous prime (66335111111) and next prime (66335111131).

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

It is a cyclic number.

It is not a de Polignac number, because 66335111121 - 2⁷ = 66335110993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66335111111) 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, 235230750 + ... + 235231031.

It is an arithmetic number, because the mean of its divisors is an integer number (11291082768).

Almost surely, 2^66335111121 is an apocalyptic number.

It is an amenable number.

66335111121 is a deficient number, since it is larger than the sum of its proper divisors (23993551023).

66335111121 is a wasteful number, since it uses less digits than its factorization.

66335111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470461831.

The product of its digits is 3240, while the sum is 30.

Adding to 66335111121 its reverse (12111153366), we get a palindrome (78446264487).

The spelling of 66335111121 in words is "sixty-six billion, three hundred thirty-five million, one hundred eleven thousand, one hundred twenty-one".