1021513421053 has 8 divisors (see below), whose sum is σ = 1045285499808. Its totient is φ = 997742067504.

The previous prime is 1021513420981. The next prime is 1021513421059. The reversal of 1021513421053 is 3501243151201.

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 1021513421053 - 2¹⁷ = 1021513289981 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 (1021513421059) 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, 3553326 + ... + 3830032.

It is an arithmetic number, because the mean of its divisors is an integer number (130660687476).

Almost surely, 2^{1021513421053} is an apocalyptic number.

It is an amenable number.

1021513421053 is a deficient number, since it is larger than the sum of its proper divisors (23772078755).

1021513421053 is an equidigital number, since it uses as much as digits as its factorization.

1021513421053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362603.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 1021513421053 its reverse (3501243151201), we get a palindrome (4522756572254).

The spelling of 1021513421053 in words is "one trillion, twenty-one billion, five hundred thirteen million, four hundred twenty-one thousand, fifty-three".