21112012220122 has 8 divisors (see below), whose sum is σ = 32689567308672. Its totient is φ = 10215489783900.

The previous prime is 21112012220111. The next prime is 21112012220177. The reversal of 21112012220122 is 22102221021112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21112012220122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170258163004 + ... + 170258163127.

It is an arithmetic number, because the mean of its divisors is an integer number (4086195913584).

Almost surely, 2^{21112012220122} is an apocalyptic number.

21112012220122 is a deficient number, since it is larger than the sum of its proper divisors (11577555088550).

21112012220122 is a wasteful number, since it uses less digits than its factorization.

21112012220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340516326164.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21112012220122 its reverse (22102221021112), we get a palindrome (43214233241234).

The spelling of 21112012220122 in words is "twenty-one trillion, one hundred twelve billion, twelve million, two hundred twenty thousand, one hundred twenty-two".