212001220120000 has 70 divisors (see below), whose sum is σ = 525694125600248. Its totient is φ = 84800488032000.

The previous prime is 212001220119973. The next prime is 212001220120007. The reversal of 212001220120000 is 21022100212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212001220120007) 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 9 ways as a sum of consecutive naturals, for example, 2649975252 + ... + 2650055251.

Almost surely, 2^{212001220120000} is an apocalyptic number.

212001220120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212001220120000 is an abundant number, since it is smaller than the sum of its proper divisors (313692905480248).

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

212001220120000 is an frugal number, since it uses more digits than its factorization.

212001220120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5300030535 (or 5300030510 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212001220120000 its reverse (21022100212), we get a palindrome (212022242220212).

The spelling of 212001220120000 in words is "two hundred twelve trillion, one billion, two hundred twenty million, one hundred twenty thousand".