12221022012221 has 8 divisors (see below), whose sum is σ = 13413815573664. Its totient is φ = 11041860377520.

The previous prime is 12221022012203. The next prime is 12221022012259.

12221022012221 is nontrivially palindromic in base 10.

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 12221022012221 - 2¹⁰ = 12221022011197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12221022012193 and 12221022012202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221022012721) 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, 3407979806 + ... + 3407983391.

It is an arithmetic number, because the mean of its divisors is an integer number (1676726946708).

Almost surely, 2^{12221022012221} is an apocalyptic number.

12221022012221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12221022012221 is a deficient number, since it is larger than the sum of its proper divisors (1192793561443).

12221022012221 is a wasteful number, since it uses less digits than its factorization.

12221022012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6815963371.

The product of its (nonzero) digits is 256, while the sum is 20.

It can be divided in two parts, 1222102 and 2012221, that added together give a palindrome (3234323).

The spelling of 12221022012221 in words is "twelve trillion, two hundred twenty-one billion, twenty-two million, twelve thousand, two hundred twenty-one".