20112012012111 has 8 divisors (see below), whose sum is σ = 26816415588144. Its totient is φ = 13407808222080.

The previous prime is 20112012012101. The next prime is 20112012012119. The reversal of 20112012012111 is 11121021021102.

It is a happy number.

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

It is not a de Polignac number, because 20112012012111 - 2³⁷ = 19974573058639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112012012119) 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, 49711450 + ... + 50114391.

It is an arithmetic number, because the mean of its divisors is an integer number (3352051948518).

Almost surely, 2^{20112012012111} is an apocalyptic number.

20112012012111 is a deficient number, since it is larger than the sum of its proper divisors (6704403576033).

20112012012111 is an equidigital number, since it uses as much as digits as its factorization.

20112012012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99893001.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20112012012111 its reverse (11121021021102), we get a palindrome (31233033033213).

The spelling of 20112012012111 in words is "twenty trillion, one hundred twelve billion, twelve million, twelve thousand, one hundred eleven".