20120112002111 has 16 divisors (see below), whose sum is σ = 23259498192000. Its totient is φ = 17212028608800.

The previous prime is 20120112002041. The next prime is 20120112002191. The reversal of 20120112002111 is 11120021102102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120112002111 is a prime.

It is a super-2 number, since 2×20120112002111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120112002191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323017445 + ... + 323079726.

It is an arithmetic number, because the mean of its divisors is an integer number (1453718637000).

Almost surely, 2^{20120112002111} is an apocalyptic number.

20120112002111 is a deficient number, since it is larger than the sum of its proper divisors (3139386189889).

20120112002111 is a wasteful number, since it uses less digits than its factorization.

20120112002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646097350.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20120112002111 its reverse (11120021102102), we get a palindrome (31240133104213).

Subtracting from 20120112002111 its reverse (11120021102102), we obtain a palindrome (9000090900009).

The spelling of 20120112002111 in words is "twenty trillion, one hundred twenty billion, one hundred twelve million, two thousand, one hundred eleven".