12122120010020 has 24 divisors (see below), whose sum is σ = 25464693151800. Its totient is φ = 4847278264832.

The previous prime is 12122120009983. The next prime is 12122120010029. The reversal of 12122120010020 is 2001002122121.

It can be written as a sum of positive squares in 4 ways, for example, as 7585254089956 + 4536865920064 = 2754134^2 + 2129992^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12122120009977 and 12122120010004.

It is not an unprimeable number, because it can be changed into a prime (12122120010029) 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, 98045375 + ... + 98168934.

It is an arithmetic number, because the mean of its divisors is an integer number (1061028881325).

Almost surely, 2^{12122120010020} is an apocalyptic number.

12122120010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122120010020 is an abundant number, since it is smaller than the sum of its proper divisors (13342573141780).

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

12122120010020 is a wasteful number, since it uses less digits than its factorization.

12122120010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196217407 (or 196217405 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12122120010020 its reverse (2001002122121), we get a palindrome (14123122132141).

The spelling of 12122120010020 in words is "twelve trillion, one hundred twenty-two billion, one hundred twenty million, ten thousand, twenty".