20121011300 has 72 divisors (see below), whose sum is σ = 49787266536. Its totient is φ = 6992271360.

The previous prime is 20121011291. The next prime is 20121011327. The reversal of 20121011300 is 311012102.

It can be written as a sum of positive squares in 12 ways, for example, as 12228821056 + 7892190244 = 110584^2 + 88838^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 433127 + ... + 477326.

It is an arithmetic number, because the mean of its divisors is an integer number (691489813).

Almost surely, 2^20121011300 is an apocalyptic number.

20121011300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121011300 is an abundant number, since it is smaller than the sum of its proper divisors (29666255236).

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

20121011300 is a wasteful number, since it uses less digits than its factorization.

20121011300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910497 (or 910490 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20121011300 its reverse (311012102), we get a palindrome (20432023402).

The spelling of 20121011300 in words is "twenty billion, one hundred twenty-one million, eleven thousand, three hundred".