22215453345121 has 4 divisors (see below), whose sum is σ = 22981503460500. Its totient is φ = 21449403229744.

The previous prime is 22215453345083. The next prime is 22215453345167. The reversal of 22215453345121 is 12154335451222.

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 6662407594896 + 15553045750225 = 2581164^2 + 3943735^2 .

It is a cyclic number.

It is not a de Polignac number, because 22215453345121 - 2¹¹ = 22215453343073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22215453345821) 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, 383025057646 + ... + 383025057703.

It is an arithmetic number, because the mean of its divisors is an integer number (5745375865125).

Almost surely, 2^{22215453345121} is an apocalyptic number.

It is an amenable number.

22215453345121 is a deficient number, since it is larger than the sum of its proper divisors (766050115379).

22215453345121 is an equidigital number, since it uses as much as digits as its factorization.

22215453345121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766050115378.

The product of its digits is 288000, while the sum is 40.

Adding to 22215453345121 its reverse (12154335451222), we get a palindrome (34369788796343).

The spelling of 22215453345121 in words is "twenty-two trillion, two hundred fifteen billion, four hundred fifty-three million, three hundred forty-five thousand, one hundred twenty-one".