22210111221020 has 12 divisors (see below), whose sum is σ = 46641233564184. Its totient is φ = 8884044488400.

The previous prime is 22210111220923. The next prime is 22210111221037. The reversal of 22210111221020 is 2012211101222.

It is a self number, because there is not a number n which added to its sum of digits gives 22210111221020.

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, 555252780506 + ... + 555252780545.

It is an arithmetic number, because the mean of its divisors is an integer number (3886769463682).

Almost surely, 2^{22210111221020} is an apocalyptic number.

22210111221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22210111221020 is an abundant number, since it is smaller than the sum of its proper divisors (24431122343164).

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

22210111221020 is a wasteful number, since it uses less digits than its factorization.

22210111221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110505561060 (or 1110505561058 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22210111221020 its reverse (2012211101222), we get a palindrome (24222322322242).

The spelling of 22210111221020 in words is "twenty-two trillion, two hundred ten billion, one hundred eleven million, two hundred twenty-one thousand, twenty".