21110122000121 has 24 divisors (see below), whose sum is σ = 27188934626016. Its totient is φ = 16203931571520.

The previous prime is 21110122000111. The next prime is 21110122000147. The reversal of 21110122000121 is 12100022101112.

It is a de Polignac number, because none of the positive numbers 2^k-21110122000121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110122000096 and 21110122000105.

It is not an unprimeable number, because it can be changed into a prime (21110122000111) 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, 292242596 + ... + 292314821.

It is an arithmetic number, because the mean of its divisors is an integer number (1132872276084).

Almost surely, 2^{21110122000121} is an apocalyptic number.

It is an amenable number.

21110122000121 is a deficient number, since it is larger than the sum of its proper divisors (6078812625895).

21110122000121 is a wasteful number, since it uses less digits than its factorization.

21110122000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584557509 (or 584557502 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21110122000121 its reverse (12100022101112), we get a palindrome (33210144101233).

It can be divided in two parts, 211101 and 22000121, that added together give a palindrome (22211222).

The spelling of 21110122000121 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty-two million, one hundred twenty-one", and thus it is an aban number.