2012201220 has 48 divisors (see below), whose sum is σ = 5639251968. Its totient is φ = 536102400.

The previous prime is 2012201197. The next prime is 2012201237. The reversal of 2012201220 is 221022102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2012201196 and 2012201205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54492 + ... + 83628.

It is an arithmetic number, because the mean of its divisors is an integer number (117484416).

Almost surely, 2^2012201220 is an apocalyptic number.

2012201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012201220 is an abundant number, since it is smaller than the sum of its proper divisors (3627050748).

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

2012201220 is a wasteful number, since it uses less digits than its factorization.

2012201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30300 (or 30298 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2012201220 is about 44857.5659170223. The cubic root of 2012201220 is about 1262.4779530183.

Adding to 2012201220 its reverse (221022102), we get a palindrome (2233223322).

The spelling of 2012201220 in words is "two billion, twelve million, two hundred one thousand, two hundred twenty".