22211210020121 has 4 divisors (see below), whose sum is σ = 22211224051044. Its totient is φ = 22211195989200.

The previous prime is 22211210020093. The next prime is 22211210020123. The reversal of 22211210020121 is 12102001211222.

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 19676144208400 + 2535065811721 = 4435780^2 + 1592189^2 .

It is a cyclic number.

It is not a de Polignac number, because 22211210020121 - 2¹⁸ = 22211209757977 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 22211210020121.

It is not an unprimeable number, because it can be changed into a prime (22211210020123) 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, 4287290 + ... + 7924851.

It is an arithmetic number, because the mean of its divisors is an integer number (5552806012761).

Almost surely, 2^{22211210020121} is an apocalyptic number.

It is an amenable number.

22211210020121 is a deficient number, since it is larger than the sum of its proper divisors (14030923).

22211210020121 is a wasteful number, since it uses less digits than its factorization.

22211210020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14030922.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22211210020121 its reverse (12102001211222), we get a palindrome (34313211231343).

The spelling of 22211210020121 in words is "twenty-two trillion, two hundred eleven billion, two hundred ten million, twenty thousand, one hundred twenty-one".