212222022021312 has 28 divisors (see below), whose sum is σ = 561504099931896. Its totient is φ = 70740674007040.

The previous prime is 212222022021283. The next prime is 212222022021343. The reversal of 212222022021312 is 213120220222212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552661515489 + ... + 552661515872.

Almost surely, 2^{212222022021312} is an apocalyptic number.

It is an amenable number.

212222022021312 is an abundant number, since it is smaller than the sum of its proper divisors (349282077910584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212222022021312 is a wasteful number, since it uses less digits than its factorization.

212222022021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105323031376 (or 1105323031366 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 212222022021312 its reverse (213120220222212), we get a palindrome (425342242243524).

The spelling of 212222022021312 in words is "two hundred twelve trillion, two hundred twenty-two billion, twenty-two million, twenty-one thousand, three hundred twelve".