20011200010100 has 72 divisors (see below), whose sum is σ = 46766275204320. Its totient is φ = 7388491639680.

The previous prime is 20011200010033. The next prime is 20011200010187. The reversal of 20011200010100 is 101000211002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39009071 + ... + 39518729.

It is an arithmetic number, because the mean of its divisors is an integer number (649531600060).

Almost surely, 2^{20011200010100} is an apocalyptic number.

20011200010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011200010100 is an abundant number, since it is smaller than the sum of its proper divisors (26755075194220).

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

20011200010100 is a wasteful number, since it uses less digits than its factorization.

20011200010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539889 (or 539882 counting only the distinct ones).

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

Adding to 20011200010100 its reverse (101000211002), we get a palindrome (20112200221102).

The spelling of 20011200010100 in words is "twenty trillion, eleven billion, two hundred million, ten thousand, one hundred".