11222121011201 has 4 divisors (see below), whose sum is σ = 11250388318932. Its totient is φ = 11193853703472.

The previous prime is 11222121011147. The next prime is 11222121011203. The reversal of 11222121011201 is 10211012122211.

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 4547338737601 + 6674782273600 = 2132449^2 + 2583560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222121011201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11222121011201.

It is not an unprimeable number, because it can be changed into a prime (11222121011203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14133653270 + ... + 14133654063.

It is an arithmetic number, because the mean of its divisors is an integer number (2812597079733).

Almost surely, 2^{11222121011201} is an apocalyptic number.

It is an amenable number.

11222121011201 is a deficient number, since it is larger than the sum of its proper divisors (28267307731).

11222121011201 is an equidigital number, since it uses as much as digits as its factorization.

11222121011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28267307730.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11222121011201 its reverse (10211012122211), we get a palindrome (21433133133412).

The spelling of 11222121011201 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, eleven thousand, two hundred one".