12001020220 has 36 divisors (see below), whose sum is σ = 29316780360. Its totient is φ = 4114635168.

The previous prime is 12001020191. The next prime is 12001020259. The reversal of 12001020220 is 2202010021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 12001020197 and 12001020206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6121990 + ... + 6123949.

It is an arithmetic number, because the mean of its divisors is an integer number (814355010).

Almost surely, 2^12001020220 is an apocalyptic number.

12001020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001020220 is an abundant number, since it is smaller than the sum of its proper divisors (17315760140).

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

12001020220 is a wasteful number, since it uses less digits than its factorization.

12001020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12245962 (or 12245953 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12001020220 its reverse (2202010021), we get a palindrome (14203030241).

The spelling of 12001020220 in words is "twelve billion, one million, twenty thousand, two hundred twenty".