22200011222021 has 4 divisors (see below), whose sum is σ = 22362055099692. Its totient is φ = 22037967344352.

The previous prime is 22200011221961. The next prime is 22200011222027. The reversal of 22200011222021 is 12022211000222.

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 16343059449025 + 5856951772996 = 4042655^2 + 2420114^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200011222021 - 2¹⁴ = 22200011205637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200011222027) 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, 81021938630 + ... + 81021938903.

It is an arithmetic number, because the mean of its divisors is an integer number (5590513774923).

Almost surely, 2^{22200011222021} is an apocalyptic number.

It is an amenable number.

22200011222021 is a deficient number, since it is larger than the sum of its proper divisors (162043877671).

22200011222021 is a wasteful number, since it uses less digits than its factorization.

22200011222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162043877670.

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

Adding to 22200011222021 its reverse (12022211000222), we get a palindrome (34222222222243).

The spelling of 22200011222021 in words is "twenty-two trillion, two hundred billion, eleven million, two hundred twenty-two thousand, twenty-one".