212211212202 has 64 divisors (see below), whose sum is σ = 514741564800. Its totient is φ = 64270160640.

The previous prime is 212211212183. The next prime is 212211212207. The reversal of 212211212202 is 202212112212.

It is a happy number.

212211212202 is a `hidden beast` number, since 212 + 211 + 21 + 220 + 2 = 666.

212211212202 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 (212211212207) 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 31 ways as a sum of consecutive naturals, for example, 962818 + ... + 1162514.

It is an arithmetic number, because the mean of its divisors is an integer number (8042836950).

Almost surely, 2^212211212202 is an apocalyptic number.

212211212202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212211212202 is an abundant number, since it is smaller than the sum of its proper divisors (302530352598).

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

212211212202 is a wasteful number, since it uses less digits than its factorization.

212211212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201508 (or 201502 counting only the distinct ones).

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

Adding to 212211212202 its reverse (202212112212), we get a palindrome (414423324414).

The spelling of 212211212202 in words is "two hundred twelve billion, two hundred eleven million, two hundred twelve thousand, two hundred two".