2012004043220 has 48 divisors (see below), whose sum is σ = 4237465881600. Its totient is φ = 802468427904.

The previous prime is 2012004043199. The next prime is 2012004043237. The reversal of 2012004043220 is 223404002102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2012004043192 and 2012004043201.

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, 21383117 + ... + 21477003.

It is an arithmetic number, because the mean of its divisors is an integer number (88280539200).

Almost surely, 2^{2012004043220} is an apocalyptic number.

2012004043220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012004043220 is an abundant number, since it is smaller than the sum of its proper divisors (2225461838380).

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

2012004043220 is a wasteful number, since it uses less digits than its factorization.

2012004043220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96992 (or 96990 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 2012004043220 its reverse (223404002102), we get a palindrome (2235408045322).

The spelling of 2012004043220 in words is "two trillion, twelve billion, four million, forty-three thousand, two hundred twenty".