2212122221020 has 12 divisors (see below), whose sum is σ = 4645456664184. Its totient is φ = 884848888400.

The previous prime is 2212122220999. The next prime is 2212122221039. The reversal of 2212122221020 is 201222212122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55303055506 + ... + 55303055545.

It is an arithmetic number, because the mean of its divisors is an integer number (387121388682).

Almost surely, 2^{2212122221020} is an apocalyptic number.

2212122221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212122221020 is an abundant number, since it is smaller than the sum of its proper divisors (2433334443164).

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

2212122221020 is a wasteful number, since it uses less digits than its factorization.

2212122221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110606111060 (or 110606111058 counting only the distinct ones).

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

Adding to 2212122221020 its reverse (201222212122), we get a palindrome (2413344433142).

The spelling of 2212122221020 in words is "two trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty".