22000022220221 has 8 divisors (see below), whose sum is σ = 22966881108864. Its totient is φ = 21034024680240.

The previous prime is 22000022220149. The next prime is 22000022220229. The reversal of 22000022220221 is 12202222000022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22000022220221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22000022220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000022220229) 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, 215284961 + ... + 215387126.

It is an arithmetic number, because the mean of its divisors is an integer number (2870860138608).

Almost surely, 2^{22000022220221} is an apocalyptic number.

It is an amenable number.

22000022220221 is a deficient number, since it is larger than the sum of its proper divisors (966858888643).

22000022220221 is a wasteful number, since it uses less digits than its factorization.

22000022220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430674331.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22000022220221 its reverse (12202222000022), we get a palindrome (34202244220243).

The spelling of 22000022220221 in words is "twenty-two trillion, twenty-two million, two hundred twenty thousand, two hundred twenty-one".