12011222001 has 32 divisors (see below), whose sum is σ = 17512704000. Its totient is φ = 7293561408.

The previous prime is 12011221969. The next prime is 12011222063. The reversal of 12011222001 is 10022211021.

It is not a de Polignac number, because 12011222001 - 2⁵ = 12011221969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12011222071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379866 + ... + 410268.

It is an arithmetic number, because the mean of its divisors is an integer number (547272000).

Almost surely, 2^12011222001 is an apocalyptic number.

It is an amenable number.

12011222001 is a deficient number, since it is larger than the sum of its proper divisors (5501481999).

12011222001 is a wasteful number, since it uses less digits than its factorization.

12011222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30693.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12011222001 its reverse (10022211021), we get a palindrome (22033433022).

The spelling of 12011222001 in words is "twelve billion, eleven million, two hundred twenty-two thousand, one".