11222012211121 has 8 divisors (see below), whose sum is σ = 11373571483560. Its totient is φ = 11071336666752.

The previous prime is 11222012211119. The next prime is 11222012211127. The reversal of 11222012211121 is 12111221022211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4499213688225 + 6722798522896 = 2121135^2 + 2592836^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11222012211121 - 2¹ = 11222012211119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222012211127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220906450 + ... + 220957243.

It is an arithmetic number, because the mean of its divisors is an integer number (1421696435445).

Almost surely, 2^{11222012211121} is an apocalyptic number.

It is an amenable number.

11222012211121 is a deficient number, since it is larger than the sum of its proper divisors (151559272439).

11222012211121 is a wasteful number, since it uses less digits than its factorization.

11222012211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441864035.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11222012211121 its reverse (12111221022211), we get a palindrome (23333233233332).

The spelling of 11222012211121 in words is "eleven trillion, two hundred twenty-two billion, twelve million, two hundred eleven thousand, one hundred twenty-one".