212223221020 has 12 divisors (see below), whose sum is σ = 445668764184. Its totient is φ = 84889288400.

The previous prime is 212223220999. The next prime is 212223221069. The reversal of 212223221020 is 20122322212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5305580506 + ... + 5305580545.

It is an arithmetic number, because the mean of its divisors is an integer number (37139063682).

Almost surely, 2^212223221020 is an apocalyptic number.

212223221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212223221020 is an abundant number, since it is smaller than the sum of its proper divisors (233445543164).

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

212223221020 is a wasteful number, since it uses less digits than its factorization.

212223221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10611161060 (or 10611161058 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 212223221020 its reverse (20122322212), we get a palindrome (232345543232).

The spelling of 212223221020 in words is "two hundred twelve billion, two hundred twenty-three million, two hundred twenty-one thousand, twenty".