22212122020 has 48 divisors (see below), whose sum is σ = 50899867200. Its totient is φ = 8074926720.

The previous prime is 22212122017. The next prime is 22212122029. The reversal of 22212122020 is 2022121222.

It is a junction number, because it is equal to n+sod(n) for n = 22212121985 and 22212122003.

It is not an unprimeable number, because it can be changed into a prime (22212122029) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 942946 + ... + 966214.

It is an arithmetic number, because the mean of its divisors is an integer number (1060413900).

Almost surely, 2^22212122020 is an apocalyptic number.

22212122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212122020 is an abundant number, since it is smaller than the sum of its proper divisors (28687745180).

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

22212122020 is a wasteful number, since it uses less digits than its factorization.

22212122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27628 (or 27626 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22212122020 its reverse (2022121222), we get a palindrome (24234243242).

The spelling of 22212122020 in words is "twenty-two billion, two hundred twelve million, one hundred twenty-two thousand, twenty".