22102012121 has 16 divisors (see below), whose sum is σ = 26138048640. Its totient is φ = 18286007040.

The previous prime is 22102012099. The next prime is 22102012129. The reversal of 22102012121 is 12121020122.

It is not a de Polignac number, because 22102012121 - 2¹⁰ = 22102011097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22102012096 and 22102012105.

It is not an unprimeable number, because it can be changed into a prime (22102012129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 784145 + ... + 811841.

It is an arithmetic number, because the mean of its divisors is an integer number (1633628040).

Almost surely, 2^22102012121 is an apocalyptic number.

It is an amenable number.

22102012121 is a deficient number, since it is larger than the sum of its proper divisors (4036036519).

22102012121 is a wasteful number, since it uses less digits than its factorization.

22102012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31664.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22102012121 its reverse (12121020122), we get a palindrome (34223032243).

The spelling of 22102012121 in words is "twenty-two billion, one hundred two million, twelve thousand, one hundred twenty-one".