22200011211121 has 4 divisors (see below), whose sum is σ = 22203582073252. Its totient is φ = 22196440348992.

The previous prime is 22200011211109. The next prime is 22200011211151. The reversal of 22200011211121 is 12111211000222.

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 15320217951025 + 6879793260096 = 3914105^2 + 2622936^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200011211121 - 2¹⁵ = 22200011178353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22200011211095 and 22200011211104.

It is not an unprimeable number, because it can be changed into a prime (22200011211151) 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, 1785421740 + ... + 1785434173.

It is an arithmetic number, because the mean of its divisors is an integer number (5550895518313).

Almost surely, 2^{22200011211121} is an apocalyptic number.

It is an amenable number.

22200011211121 is a deficient number, since it is larger than the sum of its proper divisors (3570862131).

22200011211121 is an equidigital number, since it uses as much as digits as its factorization.

22200011211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570862130.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22200011211121 its reverse (12111211000222), we get a palindrome (34311222211343).

The spelling of 22200011211121 in words is "twenty-two trillion, two hundred billion, eleven million, two hundred eleven thousand, one hundred twenty-one".