211022212212 has 72 divisors (see below), whose sum is σ = 609730162496. Its totient is φ = 60281138304.

The previous prime is 211022212211. The next prime is 211022212213. The reversal of 211022212212 is 212212220112.

It is a happy number.

211022212212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211022212211) and next prime (211022212213).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022212211) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1372743 + ... + 1518705.

Almost surely, 2^211022212212 is an apocalyptic number.

It is an amenable number.

211022212212 is an abundant number, since it is smaller than the sum of its proper divisors (398707950284).

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

211022212212 is a wasteful number, since it uses less digits than its factorization.

211022212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151717 (or 151712 counting only the distinct ones).

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

Adding to 211022212212 its reverse (212212220112), we get a palindrome (423234432324).

The spelling of 211022212212 in words is "two hundred eleven billion, twenty-two million, two hundred twelve thousand, two hundred twelve".