20011112332100 has 36 divisors (see below), whose sum is σ = 43424978048004. Its totient is φ = 8004285617280.

The previous prime is 20011112332073. The next prime is 20011112332111. The reversal of 20011112332100 is 123321111002.

It can be written as a sum of positive squares in 6 ways, for example, as 4989612257536 + 15021500074564 = 2233744^2 + 3875758^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3123302 + ... + 7055298.

Almost surely, 2^{20011112332100} is an apocalyptic number.

20011112332100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011112332100 is an abundant number, since it is smaller than the sum of its proper divisors (23413865715904).

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

20011112332100 is a wasteful number, since it uses less digits than its factorization.

20011112332100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982904 (or 3982897 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20011112332100 its reverse (123321111002), we get a palindrome (20134433443102).

The spelling of 20011112332100 in words is "twenty trillion, eleven billion, one hundred twelve million, three hundred thirty-two thousand, one hundred".