20110021111100 has 36 divisors (see below), whose sum is σ = 46205730862704. Its totient is φ = 7570831476480.

The previous prime is 20110021111097. The next prime is 20110021111129. The reversal of 20110021111100 is 111112001102.

It is a congruent number.

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, 5914710392 + ... + 5914713791.

It is an arithmetic number, because the mean of its divisors is an integer number (1283492523964).

Almost surely, 2^{20110021111100} is an apocalyptic number.

20110021111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110021111100 is an abundant number, since it is smaller than the sum of its proper divisors (26095709751604).

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

20110021111100 is a wasteful number, since it uses less digits than its factorization.

20110021111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11829424214 (or 11829424207 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20110021111100 its reverse (111112001102), we get a palindrome (20221133112202).

The spelling of 20110021111100 in words is "twenty trillion, one hundred ten billion, twenty-one million, one hundred eleven thousand, one hundred".