12021202120 has 32 divisors (see below), whose sum is σ = 27676725120. Its totient is φ = 4696655040.

The previous prime is 12021202111. The next prime is 12021202147. The reversal of 12021202120 is 2120212021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12021202120.

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, 3492816 + ... + 3496255.

It is an arithmetic number, because the mean of its divisors is an integer number (864897660).

Almost surely, 2^12021202120 is an apocalyptic number.

12021202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021202120 is an abundant number, since it is smaller than the sum of its proper divisors (15655523000).

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

12021202120 is a wasteful number, since it uses less digits than its factorization.

12021202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989125 (or 6989121 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12021202120 its reverse (2120212021), we get a palindrome (14141414141).

Subtracting from 12021202120 its reverse (2120212021), we obtain a palindrome (9900990099).

The spelling of 12021202120 in words is "twelve billion, twenty-one million, two hundred two thousand, one hundred twenty".