22011020011221 has 16 divisors (see below), whose sum is σ = 31128236313984. Its totient is φ = 13786900475904.

The previous prime is 22011020011213. The next prime is 22011020011223. The reversal of 22011020011221 is 12211002011022.

It is not a de Polignac number, because 22011020011221 - 2³ = 22011020011213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22011020011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011020011223) 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, 373964185 + ... + 374023038.

It is an arithmetic number, because the mean of its divisors is an integer number (1945514769624).

Almost surely, 2^{22011020011221} is an apocalyptic number.

It is an amenable number.

22011020011221 is a deficient number, since it is larger than the sum of its proper divisors (9117216302763).

22011020011221 is a wasteful number, since it uses less digits than its factorization.

22011020011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747987820.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22011020011221 its reverse (12211002011022), we get a palindrome (34222022022243).

The spelling of 22011020011221 in words is "twenty-two trillion, eleven billion, twenty million, eleven thousand, two hundred twenty-one".