212221221022 has 64 divisors (see below), whose sum is σ = 336601173888. Its totient is φ = 100251648000.

The previous prime is 212221221013. The next prime is 212221221151. The reversal of 212221221022 is 220122122212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119425798 + ... + 119427574.

It is an arithmetic number, because the mean of its divisors is an integer number (5259393342).

Almost surely, 2^212221221022 is an apocalyptic number.

212221221022 is a deficient number, since it is larger than the sum of its proper divisors (124379952866).

212221221022 is a wasteful number, since it uses less digits than its factorization.

212221221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212221221022 its reverse (220122122212), we get a palindrome (432343343234).

The spelling of 212221221022 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, twenty-two".