11221011222001 has 4 divisors (see below), whose sum is σ = 12824012825152. Its totient is φ = 9618009618852.

The previous prime is 11221011221993. The next prime is 11221011222089. The reversal of 11221011222001 is 10022211012211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11221011222001 - 2³ = 11221011221993 is a prime.

It is a super-2 number, since 2×11221011222001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221011222401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801500801565 + ... + 801500801578.

It is an arithmetic number, because the mean of its divisors is an integer number (3206003206288).

Almost surely, 2^{11221011222001} is an apocalyptic number.

It is an amenable number.

11221011222001 is a deficient number, since it is larger than the sum of its proper divisors (1603001603151).

11221011222001 is an equidigital number, since it uses as much as digits as its factorization.

11221011222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603001603150.

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

Adding to 11221011222001 its reverse (10022211012211), we get a palindrome (21243222234212).

The spelling of 11221011222001 in words is "eleven trillion, two hundred twenty-one billion, eleven million, two hundred twenty-two thousand, one".