20000011100 has 144 divisors (see below), whose sum is σ = 46437027840. Its totient is φ = 7459795200.

The previous prime is 20000011067. The next prime is 20000011133. The reversal of 20000011100 is 111000002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20000011067) and next prime (20000011133).

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23282471 + ... + 23283329.

It is an arithmetic number, because the mean of its divisors is an integer number (322479360).

Almost surely, 2^20000011100 is an apocalyptic number.

20000011100 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 20000011100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23218513920).

20000011100 is an abundant number, since it is smaller than the sum of its proper divisors (26437016740).

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

20000011100 is a wasteful number, since it uses less digits than its factorization.

20000011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1133 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 20000011100 its reverse (111000002), we get a palindrome (20111011102).

The spelling of 20000011100 in words is "twenty billion, eleven thousand, one hundred".