212212111200020 has 24 divisors (see below), whose sum is σ = 456514834339368. Its totient is φ = 82814482419200.

The previous prime is 212212111199987. The next prime is 212212111200031. The reversal of 212212111200020 is 20002111212212.

It can be written as a sum of positive squares in 4 ways, for example, as 16098358700176 + 196113752499844 = 4012276^2 + 14004062^2 .

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 7 ways as a sum of consecutive naturals, for example, 129397627961 + ... + 129397629600.

It is an arithmetic number, because the mean of its divisors is an integer number (19021451430807).

Almost surely, 2^{212212111200020} is an apocalyptic number.

212212111200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212111200020 is an abundant number, since it is smaller than the sum of its proper divisors (244302723139348).

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

212212111200020 is a wasteful number, since it uses less digits than its factorization.

212212111200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258795257611 (or 258795257609 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212212111200020 its reverse (20002111212212), we get a palindrome (232214222412232).

The spelling of 212212111200020 in words is "two hundred twelve trillion, two hundred twelve billion, one hundred eleven million, two hundred thousand, twenty".