12221100212012 has 12 divisors (see below), whose sum is σ = 21388718606640. Its totient is φ = 6110037752976.

The previous prime is 12221100211993. The next prime is 12221100212033. The reversal of 12221100212012 is 21021200112221.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128034587 + ... + 128130002.

It is an arithmetic number, because the mean of its divisors is an integer number (1782393217220).

Almost surely, 2^{12221100212012} is an apocalyptic number.

It is an amenable number.

12221100212012 is a deficient number, since it is larger than the sum of its proper divisors (9167618394628).

12221100212012 is a wasteful number, since it uses less digits than its factorization.

12221100212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256176520 (or 256176518 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12221100212012 its reverse (21021200112221), we get a palindrome (33242300324233).

The spelling of 12221100212012 in words is "twelve trillion, two hundred twenty-one billion, one hundred million, two hundred twelve thousand, twelve".