22011200011221 has 16 divisors (see below), whose sum is σ = 29513830889088. Its totient is φ = 14591370024000.

The previous prime is 22011200011201. The next prime is 22011200011247. The reversal of 22011200011221 is 12211000211022.

It is not a de Polignac number, because 22011200011221 - 2¹⁷ = 22011199880149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22011200011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011200011201) 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, 2351371 + ... + 7039271.

It is an arithmetic number, because the mean of its divisors is an integer number (1844614430568).

Almost surely, 2^{22011200011221} is an apocalyptic number.

It is an amenable number.

22011200011221 is a deficient number, since it is larger than the sum of its proper divisors (7502630877867).

22011200011221 is a wasteful number, since it uses less digits than its factorization.

22011200011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696732.

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

Adding to 22011200011221 its reverse (12211000211022), we get a palindrome (34222200222243).

The spelling of 22011200011221 in words is "twenty-two trillion, eleven billion, two hundred million, eleven thousand, two hundred twenty-one".