12011012221012 has 72 divisors (see below), whose sum is σ = 25739072805600. Its totient is φ = 4876426207296.

The previous prime is 12011012221009. The next prime is 12011012221063. The reversal of 12011012221012 is 21012221011021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97756914 + ... + 97879702.

It is an arithmetic number, because the mean of its divisors is an integer number (357487122300).

Almost surely, 2^{12011012221012} is an apocalyptic number.

It is an amenable number.

12011012221012 is an abundant number, since it is smaller than the sum of its proper divisors (13728060584588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12011012221012 is a wasteful number, since it uses less digits than its factorization.

12011012221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149093 (or 149084 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12011012221012 its reverse (21012221011021), we get a palindrome (33023233232033).

The spelling of 12011012221012 in words is "twelve trillion, eleven billion, twelve million, two hundred twenty-one thousand, twelve".