22010202111221 has 8 divisors (see below), whose sum is σ = 22036821893760. Its totient is φ = 21983598335952.

The previous prime is 22010202111193. The next prime is 22010202111229. The reversal of 22010202111221 is 12211120201022.

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-22010202111221 is a prime.

It is a super-2 number, since 2×22010202111221² (a number of 27 digits) contains 22 as substring.

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 22010202111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010202111229) 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, 1248986 + ... + 6751323.

It is an arithmetic number, because the mean of its divisors is an integer number (2754602736720).

Almost surely, 2^{22010202111221} is an apocalyptic number.

It is an amenable number.

22010202111221 is a deficient number, since it is larger than the sum of its proper divisors (26619782539).

22010202111221 is a wasteful number, since it uses less digits than its factorization.

22010202111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8003635.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22010202111221 its reverse (12211120201022), we get a palindrome (34221322312243).

The spelling of 22010202111221 in words is "twenty-two trillion, ten billion, two hundred two million, one hundred eleven thousand, two hundred twenty-one".