20110111000001 has 32 divisors (see below), whose sum is σ = 22219891716096. Its totient is φ = 18048377880000.

The previous prime is 20110110999971. The next prime is 20110111000073. The reversal of 20110111000001 is 10000011101102.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110111000001 is a prime.

It is a super-2 number, since 2×20110111000001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110111005001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 661697516 + ... + 661727906.

It is an arithmetic number, because the mean of its divisors is an integer number (694371616128).

Almost surely, 2^{20110111000001} is an apocalyptic number.

It is an amenable number.

20110111000001 is a deficient number, since it is larger than the sum of its proper divisors (2109780716095).

20110111000001 is a wasteful number, since it uses less digits than its factorization.

20110111000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32213.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 20110111000001 its reverse (10000011101102), we get a palindrome (30110122101103).

It can be divided in two parts, 20110 and 111000001, that added together give a palindrome (111020111).

The spelling of 20110111000001 in words is "twenty trillion, one hundred ten billion, one hundred eleven million, one", and thus it is an aban number.