20112012111 has 8 divisors (see below), whose sum is σ = 27740706480. Its totient is φ = 12945662912.

The previous prime is 20112012101. The next prime is 20112012113. The reversal of 20112012111 is 11121021102.

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

It is a cyclic number.

It is not a de Polignac number, because 20112012111 - 2⁵ = 20112012079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112012113) 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, 115586190 + ... + 115586363.

It is an arithmetic number, because the mean of its divisors is an integer number (3467588310).

Almost surely, 2^20112012111 is an apocalyptic number.

20112012111 is a deficient number, since it is larger than the sum of its proper divisors (7628694369).

20112012111 is a wasteful number, since it uses less digits than its factorization.

20112012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231172585.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20112012111 its reverse (11121021102), we get a palindrome (31233033213).

The spelling of 20112012111 in words is "twenty billion, one hundred twelve million, twelve thousand, one hundred eleven".