22101220011121 has 4 divisors (see below), whose sum is σ = 22149581543332. Its totient is φ = 22052858478912.

The previous prime is 22101220011107. The next prime is 22101220011149. The reversal of 22101220011121 is 12111002210122.

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 12602890503025 + 9498329508096 = 3550055^2 + 3081936^2 .

It is a cyclic number.

It is not a de Polignac number, because 22101220011121 - 2²⁷ = 22101085793393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22101220011095 and 22101220011104.

It is not an unprimeable number, because it can be changed into a prime (22101220011191) 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, 24180765420 + ... + 24180766333.

It is an arithmetic number, because the mean of its divisors is an integer number (5537395385833).

Almost surely, 2^{22101220011121} is an apocalyptic number.

It is an amenable number.

22101220011121 is a deficient number, since it is larger than the sum of its proper divisors (48361532211).

22101220011121 is an equidigital number, since it uses as much as digits as its factorization.

22101220011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48361532210.

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

Adding to 22101220011121 its reverse (12111002210122), we get a palindrome (34212222221243).

The spelling of 22101220011121 in words is "twenty-two trillion, one hundred one billion, two hundred twenty million, eleven thousand, one hundred twenty-one".