1320121010311 has 8 divisors (see below), whose sum is σ = 1325039500544. Its totient is φ = 1315202867640.

The previous prime is 1320121010267. The next prime is 1320121010389. The reversal of 1320121010311 is 1130101210231.

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 1320121010311 - 2¹¹ = 1320121008263 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 (1320121910311) 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, 9477376 + ... + 9615658.

It is an arithmetic number, because the mean of its divisors is an integer number (165629937568).

Almost surely, 2^{1320121010311} is an apocalyptic number.

1320121010311 is a deficient number, since it is larger than the sum of its proper divisors (4918490233).

1320121010311 is a wasteful number, since it uses less digits than its factorization.

1320121010311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173781.

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

Adding to 1320121010311 its reverse (1130101210231), we get a palindrome (2450222220542).

The spelling of 1320121010311 in words is "one trillion, three hundred twenty billion, one hundred twenty-one million, ten thousand, three hundred eleven".