22121201121111 has 24 divisors (see below), whose sum is σ = 33314941370880. Its totient is φ = 14126816442816.

The previous prime is 22121201121079. The next prime is 22121201121167. The reversal of 22121201121111 is 11112110212122.

It is a happy number.

22121201121111 is a `hidden beast` number, since 221 + 21 + 201 + 1 + 211 + 11 = 666.

It is not a de Polignac number, because 22121201121111 - 2⁵ = 22121201121079 is a prime.

It is a super-3 number, since 3×22121201121111³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121201121011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333650160 + ... + 333716453.

It is an arithmetic number, because the mean of its divisors is an integer number (1388122557120).

Almost surely, 2^{22121201121111} is an apocalyptic number.

22121201121111 is a deficient number, since it is larger than the sum of its proper divisors (11193740249769).

22121201121111 is a wasteful number, since it uses less digits than its factorization.

22121201121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667366775 (or 667366772 counting only the distinct ones).

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

Adding to 22121201121111 its reverse (11112110212122), we get a palindrome (33233311333233).

The spelling of 22121201121111 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred one million, one hundred twenty-one thousand, one hundred eleven".