20121011120 has 80 divisors (see below), whose sum is σ = 54555585600. Its totient is φ = 6898622976.

The previous prime is 20121011083. The next prime is 20121011137. The reversal of 20121011120 is 2111012102.

It is a tau number, because it is divible by the number of its divisors (80).

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, 339197 + ... + 394076.

It is an arithmetic number, because the mean of its divisors is an integer number (681944820).

Almost surely, 2^20121011120 is an apocalyptic number.

20121011120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121011120 is an abundant number, since it is smaller than the sum of its proper divisors (34434574480).

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

20121011120 is an equidigital number, since it uses as much as digits as its factorization.

20121011120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733307 (or 733287 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20121011120 its reverse (2111012102), we get a palindrome (22232023222).

The spelling of 20121011120 in words is "twenty billion, one hundred twenty-one million, eleven thousand, one hundred twenty".