1321112013 has 8 divisors (see below), whose sum is σ = 1896981408. Its totient is φ = 812991984.

The previous prime is 1321112003. The next prime is 1321112021. The reversal of 1321112013 is 3102111231.

It is a happy number.

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

It is not a de Polignac number, because 1321112013 - 2¹² = 1321107917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321111983 and 1321112001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321112003) 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, 16937295 + ... + 16937372.

It is an arithmetic number, because the mean of its divisors is an integer number (237122676).

Almost surely, 2^1321112013 is an apocalyptic number.

1321112013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1321112013 is a deficient number, since it is larger than the sum of its proper divisors (575869395).

1321112013 is a wasteful number, since it uses less digits than its factorization.

1321112013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33874683.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1321112013 is about 36347.1046027053. The cubic root of 1321112013 is about 1097.2692632275.

Adding to 1321112013 its reverse (3102111231), we get a palindrome (4423223244).

The spelling of 1321112013 in words is "one billion, three hundred twenty-one million, one hundred twelve thousand, thirteen".