212332022221 has 16 divisors (see below), whose sum is σ = 235116936000. Its totient is φ = 191733434640.

The previous prime is 212332022197. The next prime is 212332022237. The reversal of 212332022221 is 122220233212.

It is not a de Polignac number, because 212332022221 - 2¹⁵ = 212331989453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212332022192 and 212332022201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212332022321) 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, 337011 + ... + 733648.

It is an arithmetic number, because the mean of its divisors is an integer number (14694808500).

Almost surely, 2^212332022221 is an apocalyptic number.

It is an amenable number.

212332022221 is a deficient number, since it is larger than the sum of its proper divisors (22784913779).

212332022221 is a wasteful number, since it uses less digits than its factorization.

212332022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070841 (or 1070819 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 212332022221 its reverse (122220233212), we get a palindrome (334552255433).

The spelling of 212332022221 in words is "two hundred twelve billion, three hundred thirty-two million, twenty-two thousand, two hundred twenty-one".