1021020120013 has 8 divisors (see below), whose sum is σ = 1065598795008. Its totient is φ = 976456986384.

The previous prime is 1021020120011. The next prime is 1021020120031. The reversal of 1021020120013 is 3100210201201.

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 1021020120013 - 2¹ = 1021020120011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021020119975 and 1021020120002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021020120011) 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 7 ways as a sum of consecutive naturals, for example, 3750981 + ... + 4013962.

It is an arithmetic number, because the mean of its divisors is an integer number (133199849376).

Almost surely, 2^{1021020120013} is an apocalyptic number.

It is an amenable number.

1021020120013 is a deficient number, since it is larger than the sum of its proper divisors (44578674995).

1021020120013 is an equidigital number, since it uses as much as digits as its factorization.

1021020120013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7770683.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1021020120013 its reverse (3100210201201), we get a palindrome (4121230321214).

The spelling of 1021020120013 in words is "one trillion, twenty-one billion, twenty million, one hundred twenty thousand, thirteen".