12011222012 has 24 divisors (see below), whose sum is σ = 21937910400. Its totient is φ = 5743351856.

The previous prime is 12011221969. The next prime is 12011222063. The reversal of 12011222012 is 21022211021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614039 + ... + 633297.

It is an arithmetic number, because the mean of its divisors is an integer number (914079600).

Almost surely, 2^12011222012 is an apocalyptic number.

It is an amenable number.

12011222012 is a deficient number, since it is larger than the sum of its proper divisors (9926688388).

12011222012 is a wasteful number, since it uses less digits than its factorization.

12011222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26065 (or 26063 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12011222012 its reverse (21022211021), we get a palindrome (33033433033).

The spelling of 12011222012 in words is "twelve billion, eleven million, two hundred twenty-two thousand, twelve".