11110221001 has 16 divisors (see below), whose sum is σ = 13083327360. Its totient is φ = 9327915520.

The previous prime is 11110220971. The next prime is 11110221049. The reversal of 11110221001 is 10012201111.

It is not a de Polignac number, because 11110221001 - 2⁹ = 11110220489 is a prime.

It is a super-2 number, since 2×11110221001² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11110221061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 749800 + ... + 764473.

It is an arithmetic number, because the mean of its divisors is an integer number (817707960).

Almost surely, 2^11110221001 is an apocalyptic number.

11110221001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11110221001 is a deficient number, since it is larger than the sum of its proper divisors (1973106359).

11110221001 is a wasteful number, since it uses less digits than its factorization.

11110221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514336.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11110221001 its reverse (10012201111), we get a palindrome (21122422112).

The spelling of 11110221001 in words is "eleven billion, one hundred ten million, two hundred twenty-one thousand, one".