1331133133021 has 8 divisors (see below), whose sum is σ = 1363675937400. Its totient is φ = 1298593954560.

The previous prime is 1331133133009. The next prime is 1331133133063. The reversal of 1331133133021 is 1203313311331.

It can be written as a sum of positive squares in 4 ways, for example, as 422485700121 + 908647432900 = 649989^2 + 953230^2 .

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 1331133133021 - 2¹¹ = 1331133130973 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 (1331133133091) 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, 155766 + ... + 1639063.

It is an arithmetic number, because the mean of its divisors is an integer number (170459492175).

Almost surely, 2^{1331133133021} is an apocalyptic number.

It is an amenable number.

1331133133021 is a deficient number, since it is larger than the sum of its proper divisors (32542804379).

1331133133021 is a wasteful number, since it uses less digits than its factorization.

1331133133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812959.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 1331133133021 its reverse (1203313311331), we get a palindrome (2534446444352).

The spelling of 1331133133021 in words is "one trillion, three hundred thirty-one billion, one hundred thirty-three million, one hundred thirty-three thousand, twenty-one".