22111212121011 has 48 divisors (see below), whose sum is σ = 36221803057440. Its totient is φ = 12884940241920.

The previous prime is 22111212120961. The next prime is 22111212121069. The reversal of 22111212121011 is 11012121211122.

It is a happy number.

22111212121011 is a `hidden beast` number, since 221 + 11 + 212 + 1 + 210 + 11 = 666.

It is not a de Polignac number, because 22111212121011 - 2⁶ = 22111212120947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22111212121111) 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 47 ways as a sum of consecutive naturals, for example, 2698075 + ... + 7176491.

It is an arithmetic number, because the mean of its divisors is an integer number (754620897030).

Almost surely, 2^{22111212121011} is an apocalyptic number.

22111212121011 is a deficient number, since it is larger than the sum of its proper divisors (14110590936429).

22111212121011 is a wasteful number, since it uses less digits than its factorization.

22111212121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4480676 (or 4480673 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 22111212121011 its reverse (11012121211122), we get a palindrome (33123333332133).

The spelling of 22111212121011 in words is "twenty-two trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty-one thousand, eleven".