22110012012121 has 12 divisors (see below), whose sum is σ = 24543361682532. Its totient is φ = 19901000900000.

The previous prime is 22110012012073. The next prime is 22110012012131. The reversal of 22110012012121 is 12121021001122.

It can be written as a sum of positive squares in 2 ways, for example, as 19567706131600 + 2542305880521 = 4423540^2 + 1594461^2 .

It is not a de Polignac number, because 22110012012121 - 2⁷ = 22110012011993 is a prime.

It is a super-2 number, since 2×22110012012121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22110012012095 and 22110012012104.

It is not an unprimeable number, because it can be changed into a prime (22110012012131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 904578730 + ... + 904603171.

It is an arithmetic number, because the mean of its divisors is an integer number (2045280140211).

Almost surely, 2^{22110012012121} is an apocalyptic number.

It is an amenable number.

22110012012121 is a deficient number, since it is larger than the sum of its proper divisors (2433349670411).

22110012012121 is a wasteful number, since it uses less digits than its factorization.

22110012012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809182024 (or 1809182013 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22110012012121 its reverse (12121021001122), we get a palindrome (34231033013243).

It can be divided in two parts, 221100 and 12012121, that added together give a palindrome (12233221).

The spelling of 22110012012121 in words is "twenty-two trillion, one hundred ten billion, twelve million, twelve thousand, one hundred twenty-one".