12222022221020 has 48 divisors (see below), whose sum is σ = 25755948848448. Its totient is φ = 4871731522560.

The previous prime is 12222022220957. The next prime is 12222022221029. The reversal of 12222022221020 is 2012222022221.

It is a super-2 number, since 2×12222022221020² (a number of 27 digits) contains 22 as substring.

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 = 12222022220983 and 12222022221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222022221029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22200932 + ... + 22744788.

It is an arithmetic number, because the mean of its divisors is an integer number (536582267676).

Almost surely, 2^{12222022221020} is an apocalyptic number.

12222022221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222022221020 is an abundant number, since it is smaller than the sum of its proper divisors (13533926627428).

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

12222022221020 is a wasteful number, since it uses less digits than its factorization.

12222022221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547790 (or 547788 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12222022221020 its reverse (2012222022221), we get a palindrome (14234244243241).

The spelling of 12222022221020 in words is "twelve trillion, two hundred twenty-two billion, twenty-two million, two hundred twenty-one thousand, twenty".