12001122120020 has 48 divisors (see below), whose sum is σ = 27607560716736. Its totient is φ = 4345936320000.

The previous prime is 12001122119981. The next prime is 12001122120059. The reversal of 12001122120020 is 2002122110021.

It is an interprime number because it is at equal distance from previous prime (12001122119981) and next prime (12001122120059).

It is a junction number, because it is equal to n+sod(n) for n = 12001122119977 and 12001122120004.

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, 113122406 + ... + 113228445.

It is an arithmetic number, because the mean of its divisors is an integer number (575157514932).

Almost surely, 2^{12001122120020} is an apocalyptic number.

12001122120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001122120020 is an abundant number, since it is smaller than the sum of its proper divisors (15606438596716).

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

12001122120020 is a wasteful number, since it uses less digits than its factorization.

12001122120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226351112 (or 226351110 counting only the distinct ones).

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

Adding to 12001122120020 its reverse (2002122110021), we get a palindrome (14003244230041).

Subtracting from 12001122120020 its reverse (2002122110021), we obtain a palindrome (9999000009999).

The spelling of 12001122120020 in words is "twelve trillion, one billion, one hundred twenty-two million, one hundred twenty thousand, twenty".