22221220000221 has 48 divisors (see below), whose sum is σ = 35278957816128. Its totient is φ = 13366027449600.

The previous prime is 22221220000153. The next prime is 22221220000229. The reversal of 22221220000221 is 12200002212222.

22221220000221 is a `hidden beast` number, since 2 + 2 + 221 + 220 + 0 + 0 + 0 + 221 = 666.

It is not a de Polignac number, because 22221220000221 - 2⁹ = 22221219999709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22221220000194 and 22221220000203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221220000229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59450206 + ... + 59822816.

It is an arithmetic number, because the mean of its divisors is an integer number (734978287836).

Almost surely, 2^{22221220000221} is an apocalyptic number.

It is an amenable number.

22221220000221 is a deficient number, since it is larger than the sum of its proper divisors (13057737815907).

22221220000221 is a wasteful number, since it uses less digits than its factorization.

22221220000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377162 (or 377159 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22221220000221 its reverse (12200002212222), we get a palindrome (34421222212443).

The spelling of 22221220000221 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty-one", and thus it is an aban number.