210221011020212 has 24 divisors (see below), whose sum is σ = 368814115240032. Its totient is φ = 104845709484000.

The previous prime is 210221011020193. The next prime is 210221011020259. The reversal of 210221011020212 is 212020110122012.

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, 14736218 + ... + 25250705.

It is an arithmetic number, because the mean of its divisors is an integer number (15367254801668).

Almost surely, 2^{210221011020212} is an apocalyptic number.

It is an amenable number.

210221011020212 is a deficient number, since it is larger than the sum of its proper divisors (158593104219820).

210221011020212 is a wasteful number, since it uses less digits than its factorization.

210221011020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39990239 (or 39990237 counting only the distinct ones).

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

Adding to 210221011020212 its reverse (212020110122012), we get a palindrome (422241121142224).

The spelling of 210221011020212 in words is "two hundred ten trillion, two hundred twenty-one billion, eleven million, twenty thousand, two hundred twelve".