20110021300 has 18 divisors (see below), whose sum is σ = 43638746438. Its totient is φ = 8044008480.

The previous prime is 20110021277. The next prime is 20110021307. The reversal of 20110021300 is 312001102.

It can be written as a sum of positive squares in 3 ways, for example, as 6160994064 + 13949027236 = 78492^2 + 118106^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110021307) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 100550007 + ... + 100550206.

Almost surely, 2^20110021300 is an apocalyptic number.

20110021300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110021300 is an abundant number, since it is smaller than the sum of its proper divisors (23528725138).

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

20110021300 is a wasteful number, since it uses less digits than its factorization.

20110021300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201100227 (or 201100220 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20110021300 its reverse (312001102), we get a palindrome (20422022402).

The spelling of 20110021300 in words is "twenty billion, one hundred ten million, twenty-one thousand, three hundred".