2012221420 has 24 divisors (see below), whose sum is σ = 4609816848. Its totient is φ = 731716800.

The previous prime is 2012221417. The next prime is 2012221469. The reversal of 2012221420 is 241222102.

It is a junction number, because it is equal to n+sod(n) for n = 2012221394 and 2012221403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4573011 + ... + 4573450.

It is an arithmetic number, because the mean of its divisors is an integer number (192075702).

Almost surely, 2^2012221420 is an apocalyptic number.

2012221420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012221420 is an abundant number, since it is smaller than the sum of its proper divisors (2597595428).

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

2012221420 is a wasteful number, since it uses less digits than its factorization.

2012221420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9146481 (or 9146479 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2012221420 is about 44857.7910735694. The cubic root of 2012221420 is about 1262.4821775741.

Adding to 2012221420 its reverse (241222102), we get a palindrome (2253443522).

The spelling of 2012221420 in words is "two billion, twelve million, two hundred twenty-one thousand, four hundred twenty".