20011000103100 has 108 divisors (see below), whose sum is σ = 62754940577784. Its totient is φ = 5333580627840.

The previous prime is 20011000103053. The next prime is 20011000103113. The reversal of 20011000103100 is 130100011002.

It is a super-2 number, since 2×20011000103100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3806679 + ... + 7383278.

Almost surely, 2^{20011000103100} is an apocalyptic number.

20011000103100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011000103100 is an abundant number, since it is smaller than the sum of its proper divisors (42743940474684).

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

20011000103100 is a wasteful number, since it uses less digits than its factorization.

20011000103100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11191964 (or 11191954 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 20011000103100 its reverse (130100011002), we get a palindrome (20141100114102).

The spelling of 20011000103100 in words is "twenty trillion, eleven billion, one hundred three thousand, one hundred".