12122222222020 has 24 divisors (see below), whose sum is σ = 25465768201944. Its totient is φ = 4847155262976.

The previous prime is 12122222222003. The next prime is 12122222222023. The reversal of 12122222222020 is 2022222222121.

It can be written as a sum of positive squares in 4 ways, for example, as 3771231945156 + 8350990276864 = 1941966^2 + 2889808^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12122222221982 and 12122222222000.

It is not an unprimeable number, because it can be changed into a prime (12122222222023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108294277 + ... + 108406156.

It is an arithmetic number, because the mean of its divisors is an integer number (1061073675081).

Almost surely, 2^{12122222222020} is an apocalyptic number.

12122222222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122222222020 is an abundant number, since it is smaller than the sum of its proper divisors (13343545979924).

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

12122222222020 is a wasteful number, since it uses less digits than its factorization.

12122222222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216703239 (or 216703237 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 12122222222020 its reverse (2022222222121), we get a palindrome (14144444444141).

The spelling of 12122222222020 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, twenty".