11221010121111 has 8 divisors (see below), whose sum is σ = 17098682089344. Its totient is φ = 6412005783480.

The previous prime is 11221010121089. The next prime is 11221010121127. The reversal of 11221010121111 is 11112101012211.

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

It is not a de Polignac number, because 11221010121111 - 2⁶ = 11221010121047 is a prime.

It is a super-2 number, since 2×11221010121111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221010121151) 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, 267166907625 + ... + 267166907666.

It is an arithmetic number, because the mean of its divisors is an integer number (2137335261168).

Almost surely, 2^{11221010121111} is an apocalyptic number.

11221010121111 is a deficient number, since it is larger than the sum of its proper divisors (5877671968233).

11221010121111 is an equidigital number, since it uses as much as digits as its factorization.

11221010121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534333815301.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11221010121111 its reverse (11112101012211), we get a palindrome (22333111133322).

The spelling of 11221010121111 in words is "eleven trillion, two hundred twenty-one billion, ten million, one hundred twenty-one thousand, one hundred eleven".