12021002002220 has 24 divisors (see below), whose sum is σ = 25244172803808. Its totient is φ = 4808387734400.

The previous prime is 12021002002213. The next prime is 12021002002231. The reversal of 12021002002220 is 2220020012021.

It is a junction number, because it is equal to n+sod(n) for n = 12021002002195 and 12021002002204.

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, 10663160 + ... + 11736480.

It is an arithmetic number, because the mean of its divisors is an integer number (1051840533492).

Almost surely, 2^{12021002002220} is an apocalyptic number.

12021002002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021002002220 is an abundant number, since it is smaller than the sum of its proper divisors (13223170801588).

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

12021002002220 is a wasteful number, since it uses less digits than its factorization.

12021002002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633321 (or 1633319 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12021002002220 its reverse (2220020012021), we get a palindrome (14241022014241).

The spelling of 12021002002220 in words is "twelve trillion, twenty-one billion, two million, two thousand, two hundred twenty".