22121112110121 has 8 divisors (see below), whose sum is σ = 32772017940960. Its totient is φ = 14747408073396.

The previous prime is 22121112110101. The next prime is 22121112110171. The reversal of 22121112110121 is 12101121112122.

It is a happy number.

22121112110121 is a `hidden beast` number, since 221 + 2 + 111 + 211 + 0 + 121 = 666.

It is not a de Polignac number, because 22121112110121 - 2¹⁴ = 22121112093737 is a prime.

It is a super-2 number, since 2×22121112110121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22121112110094 and 22121112110103.

It is not an unprimeable number, because it can be changed into a prime (22121112110101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409650224235 + ... + 409650224288.

It is an arithmetic number, because the mean of its divisors is an integer number (4096502242620).

Almost surely, 2^{22121112110121} is an apocalyptic number.

It is an amenable number.

22121112110121 is a deficient number, since it is larger than the sum of its proper divisors (10650905830839).

22121112110121 is an equidigital number, since it uses as much as digits as its factorization.

22121112110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819300448532 (or 819300448526 counting only the distinct ones).

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

Adding to 22121112110121 its reverse (12101121112122), we get a palindrome (34222233222243).

The spelling of 22121112110121 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twelve million, one hundred ten thousand, one hundred twenty-one".