2231222199966 has 28 divisors (see below), whose sum is σ = 5017954457112. Its totient is φ = 743740732836.

The previous prime is 2231222199961. The next prime is 2231222199967. The reversal of 2231222199966 is 6699912221322.

2231222199966 is a `hidden beast` number, since 22 + 312 + 2 + 219 + 9 + 96 + 6 = 666.

It is a super-3 number, since 3×2231222199966³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231222199961) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 765163906 + ... + 765166821.

Almost surely, 2^{2231222199966} is an apocalyptic number.

2231222199966 is an abundant number, since it is smaller than the sum of its proper divisors (2786732257146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2231222199966 is an equidigital number, since it uses as much as digits as its factorization.

2231222199966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530330747 (or 1530330732 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The spelling of 2231222199966 in words is "two trillion, two hundred thirty-one billion, two hundred twenty-two million, one hundred ninety-nine thousand, nine hundred sixty-six".