212120221022 has 16 divisors (see below), whose sum is σ = 319092555600. Its totient is φ = 105756197760.

The previous prime is 212120221009. The next prime is 212120221067. The reversal of 212120221022 is 220122021212.

It is a happy number.

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, 2714822 + ... + 2791862.

It is an arithmetic number, because the mean of its divisors is an integer number (19943284725).

Almost surely, 2^212120221022 is an apocalyptic number.

212120221022 is a deficient number, since it is larger than the sum of its proper divisors (106972334578).

212120221022 is a wasteful number, since it uses less digits than its factorization.

212120221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80971.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212120221022 its reverse (220122021212), we get a palindrome (432242242234).

The spelling of 212120221022 in words is "two hundred twelve billion, one hundred twenty million, two hundred twenty-one thousand, twenty-two".