212221321020202 has 48 divisors (see below), whose sum is σ = 345788499324960. Its totient is φ = 97640247721536.

The previous prime is 212221321020197. The next prime is 212221321020217. The reversal of 212221321020202 is 202020123122212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135845293 + ... + 137398639.

It is an arithmetic number, because the mean of its divisors is an integer number (7203927069270).

Almost surely, 2^{212221321020202} is an apocalyptic number.

212221321020202 is a deficient number, since it is larger than the sum of its proper divisors (133567178304758).

212221321020202 is a wasteful number, since it uses less digits than its factorization.

212221321020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554647 (or 1554634 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 212221321020202 its reverse (202020123122212), we get a palindrome (414241444142414).

The spelling of 212221321020202 in words is "two hundred twelve trillion, two hundred twenty-one billion, three hundred twenty-one million, twenty thousand, two hundred two".