12001022011 has 8 divisors (see below), whose sum is σ = 13092841584. Its totient is φ = 10909338720.

The previous prime is 12001021999. The next prime is 12001022029. The reversal of 12001022011 is 11022010021.

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 12001022011 - 2⁵ = 12001021979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001022071) 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, 261865 + ... + 304261.

It is an arithmetic number, because the mean of its divisors is an integer number (1636605198).

Almost surely, 2^12001022011 is an apocalyptic number.

12001022011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12001022011 is a deficient number, since it is larger than the sum of its proper divisors (1091819573).

12001022011 is a wasteful number, since it uses less digits than its factorization.

12001022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68141.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12001022011 its reverse (11022010021), we get a palindrome (23023032032).

The spelling of 12001022011 in words is "twelve billion, one million, twenty-two thousand, eleven".