12021012010220 has 24 divisors (see below), whose sum is σ = 25398997162224. Its totient is φ = 4778905386816.

The previous prime is 12021012010213. The next prime is 12021012010229. The reversal of 12021012010220 is 2201021012021.

It is a junction number, because it is equal to n+sod(n) for n = 12021012010195 and 12021012010204.

It is not an unprimeable number, because it can be changed into a prime (12021012010229) 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, 1843710239 + ... + 1843716758.

It is an arithmetic number, because the mean of its divisors is an integer number (1058291548426).

Almost surely, 2^{12021012010220} is an apocalyptic number.

12021012010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021012010220 is an abundant number, since it is smaller than the sum of its proper divisors (13377985152004).

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

12021012010220 is a wasteful number, since it uses less digits than its factorization.

12021012010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687427169 (or 3687427167 counting only the distinct ones).

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

Adding to 12021012010220 its reverse (2201021012021), we get a palindrome (14222033022241).

The spelling of 12021012010220 in words is "twelve trillion, twenty-one billion, twelve million, ten thousand, two hundred twenty".