22212111212020 has 144 divisors (see below), whose sum is σ = 50571097274880. Its totient is φ = 8179233334272.

The previous prime is 22212111211993. The next prime is 22212111212033. The reversal of 22212111212020 is 2021211121222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120995461 + ... + 121178899.

It is an arithmetic number, because the mean of its divisors is an integer number (351188175520).

Almost surely, 2^{22212111212020} is an apocalyptic number.

22212111212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22212111212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25285548637440).

22212111212020 is an abundant number, since it is smaller than the sum of its proper divisors (28358986062860).

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

22212111212020 is a wasteful number, since it uses less digits than its factorization.

22212111212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183842 (or 183811 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22212111212020 its reverse (2021211121222), we get a palindrome (24233322333242).

The spelling of 22212111212020 in words is "twenty-two trillion, two hundred twelve billion, one hundred eleven million, two hundred twelve thousand, twenty".