1331320221029 has 8 divisors (see below), whose sum is σ = 1347418763712. Its totient is φ = 1315223072320.

The previous prime is 1331320221013. The next prime is 1331320221037. The reversal of 1331320221029 is 9201220231331.

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 1331320221029 - 2⁴ = 1331320221013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331320220992 and 1331320221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331320221629) 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, 1641437 + ... + 2314509.

It is an arithmetic number, because the mean of its divisors is an integer number (168427345464).

Almost surely, 2^{1331320221029} is an apocalyptic number.

It is an amenable number.

1331320221029 is a deficient number, since it is larger than the sum of its proper divisors (16098542683).

1331320221029 is an equidigital number, since it uses as much as digits as its factorization.

1331320221029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696987.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 1331320221029 in words is "one trillion, three hundred thirty-one billion, three hundred twenty million, two hundred twenty-one thousand, twenty-nine".