22011000121221 has 64 divisors (see below), whose sum is σ = 32151085056000. Its totient is φ = 13342211251200.

The previous prime is 22011000121211. The next prime is 22011000121237. The reversal of 22011000121221 is 12212100011022.

It is not a de Polignac number, because 22011000121221 - 2¹⁹ = 22010999596933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22011000121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011000121211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46707430 + ... + 47176328.

It is an arithmetic number, because the mean of its divisors is an integer number (502360704000).

Almost surely, 2^{22011000121221} is an apocalyptic number.

It is an amenable number.

22011000121221 is a deficient number, since it is larger than the sum of its proper divisors (10140084934779).

22011000121221 is a wasteful number, since it uses less digits than its factorization.

22011000121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469250.

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

Adding to 22011000121221 its reverse (12212100011022), we get a palindrome (34223100132243).

The spelling of 22011000121221 in words is "twenty-two trillion, eleven billion, one hundred twenty-one thousand, two hundred twenty-one".