22210010220121 has 4 divisors (see below), whose sum is σ = 22222826153892. Its totient is φ = 22197194286352.

The previous prime is 22210010220053. The next prime is 22210010220161. The reversal of 22210010220121 is 12102201001222.

It is a happy number.

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 17467894250521 + 4742115969600 = 4179461^2 + 2177640^2 .

It is a cyclic number.

It is not a de Polignac number, because 22210010220121 - 2¹¹ = 22210010218073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22210010220095 and 22210010220104.

It is not an unprimeable number, because it can be changed into a prime (22210010220161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6407964286 + ... + 6407967751.

It is an arithmetic number, because the mean of its divisors is an integer number (5555706538473).

Almost surely, 2^{22210010220121} is an apocalyptic number.

It is an amenable number.

22210010220121 is a deficient number, since it is larger than the sum of its proper divisors (12815933771).

22210010220121 is a wasteful number, since it uses less digits than its factorization.

22210010220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12815933770.

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

Adding to 22210010220121 its reverse (12102201001222), we get a palindrome (34312211221343).

The spelling of 22210010220121 in words is "twenty-two trillion, two hundred ten billion, ten million, two hundred twenty thousand, one hundred twenty-one".