20102011100 has 36 divisors (see below), whose sum is σ = 43627681608. Its totient is φ = 8039640000.

The previous prime is 20102011093. The next prime is 20102011103. The reversal of 20102011100 is 111020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102011103) 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 11 ways as a sum of consecutive naturals, for example, 1117175 + ... + 1135025.

Almost surely, 2^20102011100 is an apocalyptic number.

20102011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102011100 is an abundant number, since it is smaller than the sum of its proper divisors (23525670508).

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

20102011100 is a wasteful number, since it uses less digits than its factorization.

20102011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29126 (or 29119 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20102011100 its reverse (111020102), we get a palindrome (20213031202).

The spelling of 20102011100 in words is "twenty billion, one hundred two million, eleven thousand, one hundred".