22102000020121 has 4 divisors (see below), whose sum is σ = 25259428594432. Its totient is φ = 18944571445812.

The previous prime is 22102000020103. The next prime is 22102000020151. The reversal of 22102000020121 is 12102000020122.

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 22102000020121 - 2¹¹ = 22102000018073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22102000020151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578714287145 + ... + 1578714287158.

It is an arithmetic number, because the mean of its divisors is an integer number (6314857148608).

Almost surely, 2^{22102000020121} is an apocalyptic number.

It is an amenable number.

22102000020121 is a deficient number, since it is larger than the sum of its proper divisors (3157428574311).

22102000020121 is an equidigital number, since it uses as much as digits as its factorization.

22102000020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157428574310.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22102000020121 its reverse (12102000020122), we get a palindrome (34204000040243).

Subtracting from 22102000020121 its reverse (12102000020122), we obtain a palindrome (9999999999999).

The spelling of 22102000020121 in words is "twenty-two trillion, one hundred two billion, twenty thousand, one hundred twenty-one".