1321200011013 has 8 divisors (see below), whose sum is σ = 1761608556000. Its totient is φ = 880795736688.

The previous prime is 1321200011003. The next prime is 1321200011029. The reversal of 1321200011013 is 3101100021231.

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 1321200011013 - 2⁵ = 1321200010981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321200010983 and 1321200011001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321200011003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258118 + ... + 1645911.

It is an arithmetic number, because the mean of its divisors is an integer number (220201069500).

Almost surely, 2^{1321200011013} is an apocalyptic number.

It is an amenable number.

1321200011013 is a deficient number, since it is larger than the sum of its proper divisors (440408544987).

1321200011013 is a wasteful number, since it uses less digits than its factorization.

1321200011013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135331.

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

Adding to 1321200011013 its reverse (3101100021231), we get a palindrome (4422300032244).

The spelling of 1321200011013 in words is "one trillion, three hundred twenty-one billion, two hundred million, eleven thousand, thirteen".