212121220012022 has 16 divisors (see below), whose sum is σ = 323783635338000. Its totient is φ = 104195662598880.

The previous prime is 212121220012007. The next prime is 212121220012043. The reversal of 212121220012022 is 220210022121212.

It is a super-2 number, since 2×212121220012022² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212121220011985 and 212121220012003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580074629 + ... + 580440192.

It is an arithmetic number, because the mean of its divisors is an integer number (20236477208625).

Almost surely, 2^{212121220012022} is an apocalyptic number.

212121220012022 is a deficient number, since it is larger than the sum of its proper divisors (111662415325978).

212121220012022 is a wasteful number, since it uses less digits than its factorization.

212121220012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160516431.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212121220012022 its reverse (220210022121212), we get a palindrome (432331242133234).

The spelling of 212121220012022 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred twenty million, twelve thousand, twenty-two".