1313021302021 has 16 divisors (see below), whose sum is σ = 1544862674880. Its totient is φ = 1100198776320.

The previous prime is 1313021302003. The next prime is 1313021302027. The reversal of 1313021302021 is 1202031203131.

It is a cyclic number.

It is not a de Polignac number, because 1313021302021 - 2¹⁵ = 1313021269253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313021302021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313021302027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6725431 + ... + 6917908.

It is an arithmetic number, because the mean of its divisors is an integer number (96553917180).

Almost surely, 2^{1313021302021} is an apocalyptic number.

1313021302021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1313021302021 is a deficient number, since it is larger than the sum of its proper divisors (231841372859).

1313021302021 is a wasteful number, since it uses less digits than its factorization.

1313021302021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13644036.

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

Adding to 1313021302021 its reverse (1202031203131), we get a palindrome (2515052505152).

The spelling of 1313021302021 in words is "one trillion, three hundred thirteen billion, twenty-one million, three hundred two thousand, twenty-one".