2012101111111 has 8 divisors (see below), whose sum is σ = 2476432136864. Its totient is φ = 1591992087840.

The previous prime is 2012101111093. The next prime is 2012101111183. The reversal of 2012101111111 is 1111111012102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2012101111111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

2012101111111 is a modest number, since divided by 1111111 gives 201210 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2012101111091 and 2012101111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012101112111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11055500520 + ... + 11055500701.

It is an arithmetic number, because the mean of its divisors is an integer number (309554017108).

Almost surely, 2^{2012101111111} is an apocalyptic number.

2012101111111 is a deficient number, since it is larger than the sum of its proper divisors (464331025753).

2012101111111 is a wasteful number, since it uses less digits than its factorization.

2012101111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22111001241.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 2012101111111 its reverse (1111111012102), we get a palindrome (3123212123213).

Subtracting from 2012101111111 its reverse (1111111012102), we obtain a palindrome (900990099009).

It can be divided in two parts, 2012101 and 111111, that added together give a palindrome (2123212).

The spelling of 2012101111111 in words is "two trillion, twelve billion, one hundred one million, one hundred eleven thousand, one hundred eleven".