20012101100 has 36 divisors (see below), whose sum is σ = 44436181944. Its totient is φ = 7818679680.

The previous prime is 20012101093. The next prime is 20012101103. The reversal of 20012101100 is 110121002.

It is not an unprimeable number, because it can be changed into a prime (20012101103) 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, 2322689 + ... + 2331288.

Almost surely, 2^20012101100 is an apocalyptic number.

20012101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012101100 is an abundant number, since it is smaller than the sum of its proper divisors (24424080844).

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

20012101100 is a wasteful number, since it uses less digits than its factorization.

20012101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4654034 (or 4654027 counting only the distinct ones).

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

Adding to 20012101100 its reverse (110121002), we get a palindrome (20122222102).

The spelling of 20012101100 in words is "twenty billion, twelve million, one hundred one thousand, one hundred".