212310222221212 has 12 divisors (see below), whose sum is σ = 371543173486576. Its totient is φ = 106155029796480.

The previous prime is 212310222221177. The next prime is 212310222221213. The reversal of 212310222221212 is 212122222013212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212310222221213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14251989 + ... + 25054732.

Almost surely, 2^{212310222221212} is an apocalyptic number.

It is an amenable number.

212310222221212 is a deficient number, since it is larger than the sum of its proper divisors (159232951265364).

212310222221212 is a wasteful number, since it uses less digits than its factorization.

212310222221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40657068 (or 40657066 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 212310222221212 its reverse (212122222013212), we get a palindrome (424432444234424).

The spelling of 212310222221212 in words is "two hundred twelve trillion, three hundred ten billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twelve".