212220202212 has 36 divisors (see below), whose sum is σ = 536459610960. Its totient is φ = 70738208112.

The previous prime is 212220202189. The next prime is 212220202241. The reversal of 212220202212 is 212202022212.

212220202212 is a `hidden beast` number, since 212 + 220 + 20 + 2 + 212 = 666.

212220202212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2373103 + ... + 2460905.

It is an arithmetic number, because the mean of its divisors is an integer number (14901655860).

Almost surely, 2^212220202212 is an apocalyptic number.

It is an amenable number.

212220202212 is an abundant number, since it is smaller than the sum of its proper divisors (324239408748).

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

212220202212 is a wasteful number, since it uses less digits than its factorization.

212220202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154952 (or 154947 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212220202212 its reverse (212202022212), we get a palindrome (424422224424).

The spelling of 212220202212 in words is "two hundred twelve billion, two hundred twenty million, two hundred two thousand, two hundred twelve".