22021121112111 has 24 divisors (see below), whose sum is σ = 34864403184000. Its totient is φ = 13282882174800.

The previous prime is 22021121112049. The next prime is 22021121112161. The reversal of 22021121112111 is 11121112112022.

It is a happy number.

22021121112111 is a `hidden beast` number, since 220 + 21 + 1 + 211 + 1 + 211 + 1 = 666.

It is not a de Polignac number, because 22021121112111 - 2¹⁷ = 22021120981039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021121112161) 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, 527077611 + ... + 527119388.

It is an arithmetic number, because the mean of its divisors is an integer number (1452683466000).

Almost surely, 2^{22021121112111} is an apocalyptic number.

22021121112111 is a deficient number, since it is larger than the sum of its proper divisors (12843282071889).

22021121112111 is a wasteful number, since it uses less digits than its factorization.

22021121112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054197227 (or 1054197224 counting only the distinct ones).

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

Adding to 22021121112111 its reverse (11121112112022), we get a palindrome (33142233224133).

The spelling of 22021121112111 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, one hundred eleven".