1111321213 has 8 divisors (see below), whose sum is σ = 1126987128. Its totient is φ = 1095757824.

The previous prime is 1111321207. The next prime is 1111321231. The reversal of 1111321213 is 3121231111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15578809 + 1095742404 = 3947^2 + 33102^2 .

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 1111321213 - 2¹⁷ = 1111190141 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 (1111321313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3670 + ... + 47287.

It is an arithmetic number, because the mean of its divisors is an integer number (140873391).

Almost surely, 2^1111321213 is an apocalyptic number.

It is an amenable number.

1111321213 is a deficient number, since it is larger than the sum of its proper divisors (15665915).

1111321213 is a wasteful number, since it uses less digits than its factorization.

1111321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51263.

The product of its digits is 36, while the sum is 16.

The square root of 1111321213 is about 33336.4847126988. The cubic root of 1111321213 is about 1035.8094480787.

Adding to 1111321213 its reverse (3121231111), we get a palindrome (4232552324).

The spelling of 1111321213 in words is "one billion, one hundred eleven million, three hundred twenty-one thousand, two hundred thirteen".