12122112011 has 8 divisors (see below), whose sum is σ = 12246437424. Its totient is φ = 11997871200.

The previous prime is 12122111993. The next prime is 12122112031. The reversal of 12122112011 is 11021122121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122112011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122112031) 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, 290201 + ... + 329333.

It is an arithmetic number, because the mean of its divisors is an integer number (1530804678).

Almost surely, 2^12122112011 is an apocalyptic number.

12122112011 is a deficient number, since it is larger than the sum of its proper divisors (124325413).

12122112011 is a wasteful number, since it uses less digits than its factorization.

12122112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42301.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12122112011 its reverse (11021122121), we get a palindrome (23143234132).

The spelling of 12122112011 in words is "twelve billion, one hundred twenty-two million, one hundred twelve thousand, eleven".