212001221020000 has 120 divisors (see below), whose sum is σ = 552234499124616. Its totient is φ = 79812224256000.

The previous prime is 212001221019961. The next prime is 212001221020037. The reversal of 212001221020000 is 20122100212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 311426502 + ... + 312106501.

Almost surely, 2^{212001221020000} is an apocalyptic number.

212001221020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212001221020000 is an abundant number, since it is smaller than the sum of its proper divisors (340233278104616).

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

212001221020000 is an equidigital number, since it uses as much as digits as its factorization.

212001221020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623533050 (or 623533027 counting only the distinct ones).

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

Adding to 212001221020000 its reverse (20122100212), we get a palindrome (212021343120212).

The spelling of 212001221020000 in words is "two hundred twelve trillion, one billion, two hundred twenty-one million, twenty thousand".