210221220120212 has 24 divisors (see below), whose sum is σ = 424605236684160. Its totient is φ = 89202780813600.

The previous prime is 210221220120209. The next prime is 210221220120221. The reversal of 210221220120212 is 212021022122012.

210221220120212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×210221220120212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37167822512 + ... + 37167828167.

It is an arithmetic number, because the mean of its divisors is an integer number (17691884861840).

Almost surely, 2^{210221220120212} is an apocalyptic number.

It is an amenable number.

210221220120212 is an abundant number, since it is smaller than the sum of its proper divisors (214384016563948).

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

210221220120212 is a wasteful number, since it uses less digits than its factorization.

210221220120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74335650791 (or 74335650789 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 210221220120212 its reverse (212021022122012), we get a palindrome (422242242242224).

The spelling of 210221220120212 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty thousand, two hundred twelve".