22120111200221 has 16 divisors (see below), whose sum is σ = 24363993671040. Its totient is φ = 20044768816512.

The previous prime is 22120111200197. The next prime is 22120111200227. The reversal of 22120111200221 is 12200211102122.

It is a de Polignac number, because none of the positive numbers 2^k-22120111200221 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 22120111200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120111200227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69950420 + ... + 70265933.

It is an arithmetic number, because the mean of its divisors is an integer number (1522749604440).

Almost surely, 2^{22120111200221} is an apocalyptic number.

It is an amenable number.

22120111200221 is a deficient number, since it is larger than the sum of its proper divisors (2243882470819).

22120111200221 is an equidigital number, since it uses as much as digits as its factorization.

22120111200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140216433 (or 140216395 counting only the distinct ones).

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

Adding to 22120111200221 its reverse (12200211102122), we get a palindrome (34320322302343).

The spelling of 22120111200221 in words is "twenty-two trillion, one hundred twenty billion, one hundred eleven million, two hundred thousand, two hundred twenty-one".