12211100221021 has 8 divisors (see below), whose sum is σ = 13169446624544. Its totient is φ = 11255472532080.

The previous prime is 12211100221013. The next prime is 12211100221043. The reversal of 12211100221021 is 12012200111221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12211100221021 - 2³ = 12211100221013 is a prime.

It is a super-2 number, since 2×12211100221021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211100220986 and 12211100221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211100221081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679669311 + ... + 679687276.

It is an arithmetic number, because the mean of its divisors is an integer number (1646180828068).

Almost surely, 2^{12211100221021} is an apocalyptic number.

It is an amenable number.

12211100221021 is a deficient number, since it is larger than the sum of its proper divisors (958346403523).

12211100221021 is a wasteful number, since it uses less digits than its factorization.

12211100221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359357291.

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

Adding to 12211100221021 its reverse (12012200111221), we get a palindrome (24223300332242).

The spelling of 12211100221021 in words is "twelve trillion, two hundred eleven billion, one hundred million, two hundred twenty-one thousand, twenty-one".