212212133330021 has 16 divisors (see below), whose sum is σ = 232488637603200. Its totient is φ = 192100251770880.

The previous prime is 212212133329997. The next prime is 212212133330117. The reversal of 212212133330021 is 120033331212212.

It is a cyclic number.

It is not a de Polignac number, because 212212133330021 - 2¹⁸ = 212212133067877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212133330321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5665121 + ... + 21366278.

It is an arithmetic number, because the mean of its divisors is an integer number (14530539850200).

Almost surely, 2^{212212133330021} is an apocalyptic number.

It is an amenable number.

212212133330021 is a deficient number, since it is larger than the sum of its proper divisors (20276504273179).

212212133330021 is a wasteful number, since it uses less digits than its factorization.

212212133330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27034444.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 212212133330021 its reverse (120033331212212), we get a palindrome (332245464542233).

The spelling of 212212133330021 in words is "two hundred twelve trillion, two hundred twelve billion, one hundred thirty-three million, three hundred thirty thousand, twenty-one".