22222011210121 has 4 divisors (see below), whose sum is σ = 22228301055492. Its totient is φ = 22215721364752.

The previous prime is 22222011210109. The next prime is 22222011210131. The reversal of 22222011210121 is 12101211022222.

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 8888960622096 + 13333050588025 = 2981436^2 + 3651445^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222011210121 - 2⁵ = 22222011210089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22222011210131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3144917386 + ... + 3144924451.

It is an arithmetic number, because the mean of its divisors is an integer number (5557075263873).

Almost surely, 2^{22222011210121} is an apocalyptic number.

It is an amenable number.

22222011210121 is a deficient number, since it is larger than the sum of its proper divisors (6289845371).

22222011210121 is an equidigital number, since it uses as much as digits as its factorization.

22222011210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6289845370.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22222011210121 its reverse (12101211022222), we get a palindrome (34323222232343).

The spelling of 22222011210121 in words is "twenty-two trillion, two hundred twenty-two billion, eleven million, two hundred ten thousand, one hundred twenty-one".