22120102222121 has 4 divisors (see below), whose sum is σ = 22120118060244. Its totient is φ = 22120086384000.

The previous prime is 22120102222013. The next prime is 22120102222159. The reversal of 22120102222121 is 12122220102122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12302282666521 + 9817819555600 = 3507461^2 + 3133340^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120102222121 - 2¹⁴ = 22120102205737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22120102222093 and 22120102222102.

It is not an unprimeable number, because it can be changed into a prime (22120102228121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5597180 + ... + 8693021.

It is an arithmetic number, because the mean of its divisors is an integer number (5530029515061).

Almost surely, 2^{22120102222121} is an apocalyptic number.

It is an amenable number.

22120102222121 is a deficient number, since it is larger than the sum of its proper divisors (15838123).

22120102222121 is a wasteful number, since it uses less digits than its factorization.

22120102222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15838122.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22120102222121 its reverse (12122220102122), we get a palindrome (34242322324243).

The spelling of 22120102222121 in words is "twenty-two trillion, one hundred twenty billion, one hundred two million, two hundred twenty-two thousand, one hundred twenty-one".