212221210020022 has 64 divisors (see below), whose sum is σ = 369393934339584. Its totient is φ = 89562852967680.

The previous prime is 212221210020011. The next prime is 212221210020047. The reversal of 212221210020022 is 220020012122212.

It is a super-2 number, since 2×212221210020022² (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 31 ways as a sum of consecutive naturals, for example, 745783893 + ... + 746068399.

It is an arithmetic number, because the mean of its divisors is an integer number (5771780224056).

Almost surely, 2^{212221210020022} is an apocalyptic number.

212221210020022 is a deficient number, since it is larger than the sum of its proper divisors (157172724319562).

212221210020022 is a wasteful number, since it uses less digits than its factorization.

212221210020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286693.

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

Adding to 212221210020022 its reverse (220020012122212), we get a palindrome (432241222142234).

The spelling of 212221210020022 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred ten million, twenty thousand, twenty-two".