12122012011 has 8 divisors (see below), whose sum is σ = 12242936160. Its totient is φ = 12001150272.

The previous prime is 12122012009. The next prime is 12122012041. The reversal of 12122012011 is 11021022121.

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 12122012011 - 2¹ = 12122012009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12122011982 and 12122012000.

It is not an unprimeable number, because it can be changed into a prime (12122012041) 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, 440781 + ... + 467473.

It is an arithmetic number, because the mean of its divisors is an integer number (1530367020).

Almost surely, 2^12122012011 is an apocalyptic number.

12122012011 is a deficient number, since it is larger than the sum of its proper divisors (120924149).

12122012011 is a wasteful number, since it uses less digits than its factorization.

12122012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31205.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12122012011 its reverse (11021022121), we get a palindrome (23143034132).

The spelling of 12122012011 in words is "twelve billion, one hundred twenty-two million, twelve thousand, eleven".