20110103200111 has 4 divisors (see below), whose sum is σ = 20110160887552. Its totient is φ = 20110045512672.

The previous prime is 20110103200039. The next prime is 20110103200129. The reversal of 20110103200111 is 11100230101102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110103200111 is a prime.

It is a super-2 number, since 2×20110103200111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110103200091 and 20110103200100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110103200151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28317615 + ... + 29019088.

It is an arithmetic number, because the mean of its divisors is an integer number (5027540221888).

Almost surely, 2^{20110103200111} is an apocalyptic number.

20110103200111 is a deficient number, since it is larger than the sum of its proper divisors (57687441).

20110103200111 is an equidigital number, since it uses as much as digits as its factorization.

20110103200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57687440.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 20110103200111 its reverse (11100230101102), we get a palindrome (31210333301213).

The spelling of 20110103200111 in words is "twenty trillion, one hundred ten billion, one hundred three million, two hundred thousand, one hundred eleven".