1331220320101 has 32 divisors (see below), whose sum is σ = 1720192481280. Its totient is φ = 1003445452800.

The previous prime is 1331220320093. The next prime is 1331220320113. The reversal of 1331220320101 is 1010230221331.

It is not a de Polignac number, because 1331220320101 - 2³ = 1331220320093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331220320161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6114780 + ... + 6328741.

It is an arithmetic number, because the mean of its divisors is an integer number (53756015040).

Almost surely, 2^{1331220320101} is an apocalyptic number.

It is an amenable number.

1331220320101 is a deficient number, since it is larger than the sum of its proper divisors (388972161179).

1331220320101 is a wasteful number, since it uses less digits than its factorization.

1331220320101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12443605.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1331220320101 its reverse (1010230221331), we get a palindrome (2341450541432).

The spelling of 1331220320101 in words is "one trillion, three hundred thirty-one billion, two hundred twenty million, three hundred twenty thousand, one hundred one".