22002120010221 has 32 divisors (see below), whose sum is σ = 31833352252800. Its totient is φ = 13436728940544.

The previous prime is 22002120010217. The next prime is 22002120010229. The reversal of 22002120010221 is 12201002120022.

It is not a de Polignac number, because 22002120010221 - 2² = 22002120010217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22002120010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002120010229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16470805 + ... + 17756453.

It is an arithmetic number, because the mean of its divisors is an integer number (994792257900).

Almost surely, 2^{22002120010221} is an apocalyptic number.

It is an amenable number.

22002120010221 is a deficient number, since it is larger than the sum of its proper divisors (9831232242579).

22002120010221 is a wasteful number, since it uses less digits than its factorization.

22002120010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289005.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22002120010221 its reverse (12201002120022), we get a palindrome (34203122130243).

The spelling of 22002120010221 in words is "twenty-two trillion, two billion, one hundred twenty million, ten thousand, two hundred twenty-one".