22021212101111 has 16 divisors (see below), whose sum is σ = 22847872819200. Its totient is φ = 21201990364800.

The previous prime is 22021212101069. The next prime is 22021212101113. The reversal of 22021212101111 is 11110121212022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021212101111 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 22021212101111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021212101113) 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 15 ways as a sum of consecutive naturals, for example, 6343910 + ... + 9180828.

It is an arithmetic number, because the mean of its divisors is an integer number (1427992051200).

Almost surely, 2^{22021212101111} is an apocalyptic number.

22021212101111 is a deficient number, since it is larger than the sum of its proper divisors (826660718089).

22021212101111 is a wasteful number, since it uses less digits than its factorization.

22021212101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838230.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 22021212101111 its reverse (11110121212022), we get a palindrome (33131333313133).

The spelling of 22021212101111 in words is "twenty-two trillion, twenty-one billion, two hundred twelve million, one hundred one thousand, one hundred eleven".