20112111006 has 24 divisors (see below), whose sum is σ = 43556408280. Its totient is φ = 6188341536.

The previous prime is 20112110989. The next prime is 20112111109. The reversal of 20112111006 is 60011121102.

It is a happy number.

It is a Curzon number.

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, 9916201 + ... + 9918228.

It is an arithmetic number, because the mean of its divisors is an integer number (1814850345).

Almost surely, 2^20112111006 is an apocalyptic number.

20112111006 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20112111006 is an abundant number, since it is smaller than the sum of its proper divisors (23444297274).

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

20112111006 is a wasteful number, since it uses less digits than its factorization.

20112111006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19834460 (or 19834447 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 20112111006 its reverse (60011121102), we get a palindrome (80123232108).

The spelling of 20112111006 in words is "twenty billion, one hundred twelve million, one hundred eleven thousand, six".