212221200231 has 8 divisors (see below), whose sum is σ = 314401778160. Its totient is φ = 141480800136.

The previous prime is 212221200229. The next prime is 212221200251. The reversal of 212221200231 is 132002122212.

212221200231 is a `hidden beast` number, since 2 + 12 + 221 + 200 + 231 = 666.

It is not a de Polignac number, because 212221200231 - 2¹ = 212221200229 is a prime.

It is a super-2 number, since 2×212221200231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221200211) 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, 3930022200 + ... + 3930022253.

It is an arithmetic number, because the mean of its divisors is an integer number (39300222270).

Almost surely, 2^212221200231 is an apocalyptic number.

212221200231 is a deficient number, since it is larger than the sum of its proper divisors (102180577929).

212221200231 is an equidigital number, since it uses as much as digits as its factorization.

212221200231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7860044462 (or 7860044456 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212221200231 its reverse (132002122212), we get a palindrome (344223322443).

The spelling of 212221200231 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred thousand, two hundred thirty-one".