212022211212 has 72 divisors (see below), whose sum is σ = 644745920000. Its totient is φ = 57389469408.

The previous prime is 212022211201. The next prime is 212022211213. The reversal of 212022211212 is 212112220212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212022211213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22136212 + ... + 22145787.

Almost surely, 2^212022211212 is an apocalyptic number.

It is an amenable number.

212022211212 is an abundant number, since it is smaller than the sum of its proper divisors (432723708788).

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

212022211212 is a wasteful number, since it uses less digits than its factorization.

212022211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44282035 (or 44282030 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212022211212 its reverse (212112220212), we get a palindrome (424134431424).

The spelling of 212022211212 in words is "two hundred twelve billion, twenty-two million, two hundred eleven thousand, two hundred twelve".