1121011321 has 8 divisors (see below), whose sum is σ = 1143538560. Its totient is φ = 1098535152.

The previous prime is 1121011319. The next prime is 1121011349. The reversal of 1121011321 is 1231101211.

It is a happy number.

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 1121011321 - 2¹ = 1121011319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121011301) 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, 33216 + ... + 57838.

It is an arithmetic number, because the mean of its divisors is an integer number (142942320).

Almost surely, 2^1121011321 is an apocalyptic number.

It is an amenable number.

1121011321 is a deficient number, since it is larger than the sum of its proper divisors (22527239).

1121011321 is an equidigital number, since it uses as much as digits as its factorization.

1121011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25535.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1121011321 is about 33481.5071494698. The cubic root of 1121011321 is about 1038.8113024265.

Adding to 1121011321 its reverse (1231101211), we get a palindrome (2352112532).

The spelling of 1121011321 in words is "one billion, one hundred twenty-one million, eleven thousand, three hundred twenty-one".