22212121200001 has 4 divisors (see below), whose sum is σ = 22212257657904. Its totient is φ = 22211984742100.

The previous prime is 22212121199993. The next prime is 22212121200007. The reversal of 22212121200001 is 10000212121222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22212121200001 - 2³ = 22212121199993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212121200007) 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 3 ways as a sum of consecutive naturals, for example, 67984495 + ... + 68310436.

It is an arithmetic number, because the mean of its divisors is an integer number (5553064414476).

Almost surely, 2^{22212121200001} is an apocalyptic number.

It is an amenable number.

22212121200001 is a deficient number, since it is larger than the sum of its proper divisors (136457903).

22212121200001 is a wasteful number, since it uses less digits than its factorization.

22212121200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136457902.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22212121200001 its reverse (10000212121222), we get a palindrome (32212333321223).

The spelling of 22212121200001 in words is "twenty-two trillion, two hundred twelve billion, one hundred twenty-one million, two hundred thousand, one".