1111320221 has 8 divisors (see below), whose sum is σ = 1212614688. Its totient is φ = 1010070000.

The previous prime is 1111320179. The next prime is 1111320229. The reversal of 1111320221 is 1220231111.

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

It is a cyclic number.

It is not a de Polignac number, because 1111320221 - 2⁶ = 1111320157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111320196 and 1111320205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111320229) 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, 63131 + ... + 78791.

It is an arithmetic number, because the mean of its divisors is an integer number (151576836).

Almost surely, 2^1111320221 is an apocalyptic number.

1111320221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111320221 is a deficient number, since it is larger than the sum of its proper divisors (101294467).

1111320221 is a wasteful number, since it uses less digits than its factorization.

1111320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22123.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1111320221 is about 33336.4698341021. The cubic root of 1111320221 is about 1035.8091398800.

Adding to 1111320221 its reverse (1220231111), we get a palindrome (2331551332).

The spelling of 1111320221 in words is "one billion, one hundred eleven million, three hundred twenty thousand, two hundred twenty-one".