212220122202 has 64 divisors (see below), whose sum is σ = 514531353600. Its totient is φ = 64301837040.

The previous prime is 212220122141. The next prime is 212220122207. The reversal of 212220122202 is 202221022212.

212220122202 is a `hidden beast` number, since 212 + 220 + 12 + 220 + 2 = 666.

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 (212220122207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7695763 + ... + 7723289.

It is an arithmetic number, because the mean of its divisors is an integer number (8039552400).

Almost surely, 2^212220122202 is an apocalyptic number.

212220122202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212220122202 is an abundant number, since it is smaller than the sum of its proper divisors (302311231398).

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

212220122202 is a wasteful number, since it uses less digits than its factorization.

212220122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40528 (or 40522 counting only the distinct ones).

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

Adding to 212220122202 its reverse (202221022212), we get a palindrome (414441144414).

The spelling of 212220122202 in words is "two hundred twelve billion, two hundred twenty million, one hundred twenty-two thousand, two hundred two".