212211302231220 has 96 divisors (see below), whose sum is σ = 600880655652480. Its totient is φ = 55955022520320.

The previous prime is 212211302231207. The next prime is 212211302231351. The reversal of 212211302231220 is 22132203112212.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 34509541 + ... + 40191180.

It is an arithmetic number, because the mean of its divisors is an integer number (6259173496380).

Almost surely, 2^{212211302231220} is an apocalyptic number.

212211302231220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212211302231220 is an abundant number, since it is smaller than the sum of its proper divisors (388669353421260).

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

212211302231220 is a wasteful number, since it uses less digits than its factorization.

212211302231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74701265 (or 74701263 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 212211302231220 its reverse (22132203112212), we get a palindrome (234343505343432).

The spelling of 212211302231220 in words is "two hundred twelve trillion, two hundred eleven billion, three hundred two million, two hundred thirty-one thousand, two hundred twenty".