212222222111020 has 48 divisors (see below), whose sum is σ = 486395713405728. Its totient is φ = 77137765468160.

The previous prime is 212222222110991. The next prime is 212222222111057. The reversal of 212222222111020 is 20111222222212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 212222222110982 and 212222222111000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211696699 + ... + 212696818.

It is an arithmetic number, because the mean of its divisors is an integer number (10133244029286).

Almost surely, 2^{212222222111020} is an apocalyptic number.

212222222111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212222222111020 is an abundant number, since it is smaller than the sum of its proper divisors (274173491294708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212222222111020 is a wasteful number, since it uses less digits than its factorization.

212222222111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424395810 (or 424395808 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212222222111020 its reverse (20111222222212), we get a palindrome (232333444333232).

It can be divided in two parts, 2122222 and 22111020, that added together give a palindrome (24233242).

The spelling of 212222222111020 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, twenty".