12001102221 has 16 divisors (see below), whose sum is σ = 16847792640. Its totient is φ = 7577780400.

The previous prime is 12001102193. The next prime is 12001102271. The reversal of 12001102221 is 12220110021.

It is not a de Polignac number, because 12001102221 - 2⁵ = 12001102189 is a prime.

It is a super-2 number, since 2×12001102221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12001102197 and 12001102206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001102271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230056 + ... + 277358.

It is an arithmetic number, because the mean of its divisors is an integer number (1052987040).

Almost surely, 2^12001102221 is an apocalyptic number.

It is an amenable number.

12001102221 is a deficient number, since it is larger than the sum of its proper divisors (4846690419).

12001102221 is a wasteful number, since it uses less digits than its factorization.

12001102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51776.

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

Adding to 12001102221 its reverse (12220110021), we get a palindrome (24221212242).

The spelling of 12001102221 in words is "twelve billion, one million, one hundred two thousand, two hundred twenty-one".