1021021320001 has 4 divisors (see below), whose sum is σ = 1021023360000. Its totient is φ = 1021019280004.

The previous prime is 1021021319963. The next prime is 1021021320019. The reversal of 1021021320001 is 1000231201201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1021021320001 - 2³¹ = 1018873836353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021021329001) 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 3 ways as a sum of consecutive naturals, for example, 301200 + ... + 1460398.

It is an arithmetic number, because the mean of its divisors is an integer number (255255840000).

Almost surely, 2^{1021021320001} is an apocalyptic number.

It is an amenable number.

1021021320001 is a deficient number, since it is larger than the sum of its proper divisors (2039999).

1021021320001 is an equidigital number, since it uses as much as digits as its factorization.

1021021320001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039998.

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

Adding to 1021021320001 its reverse (1000231201201), we get a palindrome (2021252521202).

The spelling of 1021021320001 in words is "one trillion, twenty-one billion, twenty-one million, three hundred twenty thousand, one".