1331221103001 has 24 divisors (see below), whose sum is σ = 2025559897920. Its totient is φ = 840156026976.

The previous prime is 1331221102999. The next prime is 1331221103041. The reversal of 1331221103001 is 1003011221331.

1331221103001 is a `hidden beast` number, since 1 + 331 + 2 + 21 + 10 + 300 + 1 = 666.

It is not a de Polignac number, because 1331221103001 - 2¹ = 1331221102999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1331221103041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2613690 + ... + 3081203.

It is an arithmetic number, because the mean of its divisors is an integer number (84398329080).

Almost surely, 2^{1331221103001} is an apocalyptic number.

It is an amenable number.

1331221103001 is a deficient number, since it is larger than the sum of its proper divisors (694338794919).

1331221103001 is a wasteful number, since it uses less digits than its factorization.

1331221103001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5696285 (or 5696282 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1331221103001 its reverse (1003011221331), we get a palindrome (2334232324332).

The spelling of 1331221103001 in words is "one trillion, three hundred thirty-one billion, two hundred twenty-one million, one hundred three thousand, one".