12212001221011 has 32 divisors (see below), whose sum is σ = 13184896158720. Its totient is φ = 11274351379200.

The previous prime is 12212001221009. The next prime is 12212001221033. The reversal of 12212001221011 is 11012210021221.

It is a cyclic number.

It is not a de Polignac number, because 12212001221011 - 2¹ = 12212001221009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212001221041) 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, 195840340 + ... + 195902686.

It is an arithmetic number, because the mean of its divisors is an integer number (412028004960).

Almost surely, 2^{12212001221011} is an apocalyptic number.

12212001221011 is a deficient number, since it is larger than the sum of its proper divisors (972894937709).

12212001221011 is a wasteful number, since it uses less digits than its factorization.

12212001221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63355.

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

Adding to 12212001221011 its reverse (11012210021221), we get a palindrome (23224211242232).

The spelling of 12212001221011 in words is "twelve trillion, two hundred twelve billion, one million, two hundred twenty-one thousand, eleven".