20403332011100 has 18 divisors (see below), whose sum is σ = 44275230464304. Its totient is φ = 8161332804400.

The previous prime is 20403332011087. The next prime is 20403332011121. The reversal of 20403332011100 is 111023330402.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102016659956 + ... + 102016660155.

Almost surely, 2^{20403332011100} is an apocalyptic number.

20403332011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20403332011100 is an abundant number, since it is smaller than the sum of its proper divisors (23871898453204).

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

20403332011100 is a wasteful number, since it uses less digits than its factorization.

20403332011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204033320125 (or 204033320118 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20403332011100 its reverse (111023330402), we get a palindrome (20514355341502).

The spelling of 20403332011100 in words is "twenty trillion, four hundred three billion, three hundred thirty-two million, eleven thousand, one hundred".