12122222220020 has 24 divisors (see below), whose sum is σ = 27770909086368. Its totient is φ = 4408080807200.

The previous prime is 12122222219983. The next prime is 12122222220071. The reversal of 12122222220020 is 2002222222121.

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 = 12122222219974 and 12122222220001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27550504826 + ... + 27550505265.

It is an arithmetic number, because the mean of its divisors is an integer number (1157121211932).

Almost surely, 2^{12122222220020} is an apocalyptic number.

12122222220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122222220020 is an abundant number, since it is smaller than the sum of its proper divisors (15648686866348).

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

12122222220020 is a wasteful number, since it uses less digits than its factorization.

12122222220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55101010111 (or 55101010109 counting only the distinct ones).

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

Adding to 12122222220020 its reverse (2002222222121), we get a palindrome (14124444442141).

The spelling of 12122222220020 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty thousand, twenty".