2012011220020 has 24 divisors (see below), whose sum is σ = 4231035454464. Its totient is φ = 803697460896.

The previous prime is 2012011219979. The next prime is 2012011220027. The reversal of 2012011220020 is 200221102102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012011220027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69174292 + ... + 69203371.

It is an arithmetic number, because the mean of its divisors is an integer number (176293143936).

Almost surely, 2^{2012011220020} is an apocalyptic number.

2012011220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012011220020 is an abundant number, since it is smaller than the sum of its proper divisors (2219024234444).

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

2012011220020 is a wasteful number, since it uses less digits than its factorization.

2012011220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138378399 (or 138378397 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2012011220020 its reverse (200221102102), we get a palindrome (2212232322122).

The spelling of 2012011220020 in words is "two trillion, twelve billion, eleven million, two hundred twenty thousand, twenty".