22212122010121 has 4 divisors (see below), whose sum is σ = 22408689461652. Its totient is φ = 22015554558592.

The previous prime is 22212122010119. The next prime is 22212122010191. The reversal of 22212122010121 is 12101022121222.

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 8444022339600 + 13768099670521 = 2905860^2 + 3710539^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212122010121 - 2¹ = 22212122010119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212122010191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98283725596 + ... + 98283725821.

It is an arithmetic number, because the mean of its divisors is an integer number (5602172365413).

Almost surely, 2^{22212122010121} is an apocalyptic number.

It is an amenable number.

22212122010121 is a deficient number, since it is larger than the sum of its proper divisors (196567451531).

22212122010121 is a wasteful number, since it uses less digits than its factorization.

22212122010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196567451530.

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

Adding to 22212122010121 its reverse (12101022121222), we get a palindrome (34313144131343).

The spelling of 22212122010121 in words is "twenty-two trillion, two hundred twelve billion, one hundred twenty-two million, ten thousand, one hundred twenty-one".