22221202012221 has 8 divisors (see below), whose sum is σ = 30649933810080. Its totient is φ = 14303302444592.

The previous prime is 22221202012181. The next prime is 22221202012237. The reversal of 22221202012221 is 12221020212222.

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 22221202012221 - 2⁶ = 22221202012157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221202012291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127708057455 + ... + 127708057628.

It is an arithmetic number, because the mean of its divisors is an integer number (3831241726260).

Almost surely, 2^{22221202012221} is an apocalyptic number.

It is an amenable number.

22221202012221 is a deficient number, since it is larger than the sum of its proper divisors (8428731797859).

22221202012221 is a wasteful number, since it uses less digits than its factorization.

22221202012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255416115115.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22221202012221 its reverse (12221020212222), we get a palindrome (34442222224443).

The spelling of 22221202012221 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred two million, twelve thousand, two hundred twenty-one".