22002102021221 has 24 divisors (see below), whose sum is σ = 26420397189120. Its totient is φ = 18250250810400.

The previous prime is 22002102021217. The next prime is 22002102021287. The reversal of 22002102021221 is 12212020120022.

It is a happy number.

It is not a de Polignac number, because 22002102021221 - 2² = 22002102021217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22002102021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002102026221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111683276 + ... + 111880106.

It is an arithmetic number, because the mean of its divisors is an integer number (1100849882880).

Almost surely, 2^{22002102021221} is an apocalyptic number.

It is an amenable number.

22002102021221 is a deficient number, since it is larger than the sum of its proper divisors (4418295167899).

22002102021221 is a wasteful number, since it uses less digits than its factorization.

22002102021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270465 (or 270458 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22002102021221 its reverse (12212020120022), we get a palindrome (34214122141243).

The spelling of 22002102021221 in words is "twenty-two trillion, two billion, one hundred two million, twenty-one thousand, two hundred twenty-one".