212010021201220 has 24 divisors (see below), whose sum is σ = 485695684934208. Its totient is φ = 77094553164000.

The previous prime is 212010021201157. The next prime is 212010021201323. The reversal of 212010021201220 is 22102120010212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212010021201194 and 212010021201203.

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 7 ways as a sum of consecutive naturals, for example, 481840957056 + ... + 481840957495.

It is an arithmetic number, because the mean of its divisors is an integer number (20237320205592).

Almost surely, 2^{212010021201220} is an apocalyptic number.

212010021201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212010021201220 is an abundant number, since it is smaller than the sum of its proper divisors (273685663732988).

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

212010021201220 is a wasteful number, since it uses less digits than its factorization.

212010021201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963681914571 (or 963681914569 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212010021201220 its reverse (22102120010212), we get a palindrome (234112141211432).

The spelling of 212010021201220 in words is "two hundred twelve trillion, ten billion, twenty-one million, two hundred one thousand, two hundred twenty".