22002122020121 has 16 divisors (see below), whose sum is σ = 22121016395520. Its totient is φ = 21883371713280.

The previous prime is 22002122020117. The next prime is 22002122020139. The reversal of 22002122020121 is 12102022120022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22002122020121 - 2² = 22002122020117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22002122020121.

It is not an unprimeable number, because it can be changed into a prime (22002122022121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3330119600 + ... + 3330126206.

It is an arithmetic number, because the mean of its divisors is an integer number (1382563524720).

Almost surely, 2^{22002122020121} is an apocalyptic number.

It is an amenable number.

22002122020121 is a deficient number, since it is larger than the sum of its proper divisors (118894375399).

22002122020121 is a wasteful number, since it uses less digits than its factorization.

22002122020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14864.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22002122020121 its reverse (12102022120022), we get a palindrome (34104144140143).

Subtracting from 22002122020121 its reverse (12102022120022), we obtain a palindrome (9900099900099).

The spelling of 22002122020121 in words is "twenty-two trillion, two billion, one hundred twenty-two million, twenty thousand, one hundred twenty-one".