20121112122011 has 8 divisors (see below), whose sum is σ = 20260462809600. Its totient is φ = 19982060793000.

The previous prime is 20121112121959. The next prime is 20121112122017. The reversal of 20121112122011 is 11022121112102.

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 20121112122011 - 2¹⁰ = 20121112120987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121112122017) 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, 74704751 + ... + 74973608.

It is an arithmetic number, because the mean of its divisors is an integer number (2532557851200).

Almost surely, 2^{20121112122011} is an apocalyptic number.

20121112122011 is a deficient number, since it is larger than the sum of its proper divisors (139350687589).

20121112122011 is a wasteful number, since it uses less digits than its factorization.

20121112122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149679289.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20121112122011 its reverse (11022121112102), we get a palindrome (31143233234113).

The spelling of 20121112122011 in words is "twenty trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twenty-two thousand, eleven".