22022000022221 has 8 divisors (see below), whose sum is σ = 24069586362624. Its totient is φ = 20057988634560.

The previous prime is 22022000022203. The next prime is 22022000022229. The reversal of 22022000022221 is 12222000022022.

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-22022000022221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 22022000022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022000022229) 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, 20893737635 + ... + 20893738688.

It is an arithmetic number, because the mean of its divisors is an integer number (3008698295328).

Almost surely, 2^{22022000022221} is an apocalyptic number.

It is an amenable number.

22022000022221 is a deficient number, since it is larger than the sum of its proper divisors (2047586340403).

22022000022221 is a wasteful number, since it uses less digits than its factorization.

22022000022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41787476371.

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

Adding to 22022000022221 its reverse (12222000022022), we get a palindrome (34244000044243).

The spelling of 22022000022221 in words is "twenty-two trillion, twenty-two billion, twenty-two thousand, two hundred twenty-one".