11102011221001 has 4 divisors (see below), whose sum is σ = 11102060250900. Its totient is φ = 11101962191104.

The previous prime is 11102011220959. The next prime is 11102011221023. The reversal of 11102011221001 is 10012211020111.

It is a happy number.

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 3156947168400 + 7945064052601 = 1776780^2 + 2818699^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102011221001 - 2²⁵ = 11101977666569 is a prime.

It is a super-2 number, since 2×11102011221001² (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 (11102011221701) 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, 24173716 + ... + 24628693.

It is an arithmetic number, because the mean of its divisors is an integer number (2775515062725).

Almost surely, 2^{11102011221001} is an apocalyptic number.

It is an amenable number.

11102011221001 is a deficient number, since it is larger than the sum of its proper divisors (49029899).

11102011221001 is an equidigital number, since it uses as much as digits as its factorization.

11102011221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49029898.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11102011221001 its reverse (10012211020111), we get a palindrome (21114222241112).

The spelling of 11102011221001 in words is "eleven trillion, one hundred two billion, eleven million, two hundred twenty-one thousand, one".