22022121211220 has 48 divisors (see below), whose sum is σ = 49805921424000. Its totient is φ = 8130910502016.

The previous prime is 22022121211217. The next prime is 22022121211273. The reversal of 22022121211220 is 2211212122022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22022121211192 and 22022121211201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4641089 + ... + 8098391.

It is an arithmetic number, because the mean of its divisors is an integer number (1037623363000).

Almost surely, 2^{22022121211220} is an apocalyptic number.

22022121211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22022121211220 is an abundant number, since it is smaller than the sum of its proper divisors (27783800212780).

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

22022121211220 is a wasteful number, since it uses less digits than its factorization.

22022121211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481824 (or 3481822 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22022121211220 its reverse (2211212122022), we get a palindrome (24233333333242).

The spelling of 22022121211220 in words is "twenty-two trillion, twenty-two billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twenty".