11110213323221 has 4 divisors (see below), whose sum is σ = 11493324127500. Its totient is φ = 10727102518944.

The previous prime is 11110213323199. The next prime is 11110213323229. The reversal of 11110213323221 is 12232331201111.

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 8274741262225 + 2835472060996 = 2876585^2 + 1683886^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110213323221 - 2²² = 11110209128917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110213323229) 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, 191555402096 + ... + 191555402153.

It is an arithmetic number, because the mean of its divisors is an integer number (2873331031875).

Almost surely, 2^{11110213323221} is an apocalyptic number.

It is an amenable number.

11110213323221 is a deficient number, since it is larger than the sum of its proper divisors (383110804279).

11110213323221 is an equidigital number, since it uses as much as digits as its factorization.

11110213323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383110804278.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11110213323221 its reverse (12232331201111), we get a palindrome (23342544524332).

The spelling of 11110213323221 in words is "eleven trillion, one hundred ten billion, two hundred thirteen million, three hundred twenty-three thousand, two hundred twenty-one".