212220110022222 has 32 divisors (see below), whose sum is σ = 443916992994048. Its totient is φ = 67508114103936.

The previous prime is 212220110022197. The next prime is 212220110022229. The reversal of 212220110022222 is 222220011022212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220110022229) by changing a digit.

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, 1775721868 + ... + 1775841375.

It is an arithmetic number, because the mean of its divisors is an integer number (13872406031064).

Almost surely, 2^{212220110022222} is an apocalyptic number.

212220110022222 is an abundant number, since it is smaller than the sum of its proper divisors (231696882971826).

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

212220110022222 is a wasteful number, since it uses less digits than its factorization.

212220110022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551563704.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 212220110022222 its reverse (222220011022212), we get a palindrome (434440121044434).

The spelling of 212220110022222 in words is "two hundred twelve trillion, two hundred twenty billion, one hundred ten million, twenty-two thousand, two hundred twenty-two".