221212314343133 has 32 divisors (see below), whose sum is σ = 238662411878400. Its totient is φ = 204437284128000.

The previous prime is 221212314343123. The next prime is 221212314343157. The reversal of 221212314343133 is 331343413212122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221212314343133 - 2⁴ = 221212314343117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221212314343093 and 221212314343102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212314343123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1095123338 + ... + 1095325316.

It is an arithmetic number, because the mean of its divisors is an integer number (7458200371200).

Almost surely, 2^{221212314343133} is an apocalyptic number.

221212314343133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221212314343133 is a deficient number, since it is larger than the sum of its proper divisors (17450097535267).

221212314343133 is a wasteful number, since it uses less digits than its factorization.

221212314343133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204513.

The product of its digits is 62208, while the sum is 35.

Adding to 221212314343133 its reverse (331343413212122), we get a palindrome (552555727555255).

The spelling of 221212314343133 in words is "two hundred twenty-one trillion, two hundred twelve billion, three hundred fourteen million, three hundred forty-three thousand, one hundred thirty-three".