20021110000 has 100 divisors (see below), whose sum is σ = 48723959592. Its totient is φ = 7967008000.

The previous prime is 20021109991. The next prime is 20021110033. The reversal of 20021110000 is 1112002.

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 1964919 + ... + 1975081.

Almost surely, 2^20021110000 is an apocalyptic number.

20021110000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20021110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24361979796).

20021110000 is an abundant number, since it is smaller than the sum of its proper divisors (28702849592).

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

20021110000 is a wasteful number, since it uses less digits than its factorization.

20021110000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10388 (or 10367 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20021110000 its reverse (1112002), we get a palindrome (20022222002).

The spelling of 20021110000 in words is "twenty billion, twenty-one million, one hundred ten thousand".