21110121001222 has 48 divisors (see below), whose sum is σ = 34898253023232. Its totient is φ = 9498050100000.

The previous prime is 21110121001153. The next prime is 21110121001241. The reversal of 21110121001222 is 22210012101112.

It is a junction number, because it is equal to n+sod(n) for n = 21110121001196 and 21110121001205.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1084172947 + ... + 1084192417.

It is an arithmetic number, because the mean of its divisors is an integer number (727046937984).

Almost surely, 2^{21110121001222} is an apocalyptic number.

21110121001222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21110121001222 is a deficient number, since it is larger than the sum of its proper divisors (13788132022010).

21110121001222 is a wasteful number, since it uses less digits than its factorization.

21110121001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24517 (or 24416 counting only the distinct ones).

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

Adding to 21110121001222 its reverse (22210012101112), we get a palindrome (43320133102334).

The spelling of 21110121001222 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty-one million, one thousand, two hundred twenty-two".