1021231332001 has 4 divisors (see below), whose sum is σ = 1030600426900. Its totient is φ = 1011862237104.

The previous prime is 1021231331999. The next prime is 1021231332041. The reversal of 1021231332001 is 1002331321201.

1021231332001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 680847768225 + 340383563776 = 825135^2 + 583424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021231332001 - 2¹ = 1021231331999 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 1021231332001.

It is not an unprimeable number, because it can be changed into a prime (1021231332041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4684547286 + ... + 4684547503.

It is an arithmetic number, because the mean of its divisors is an integer number (257650106725).

Almost surely, 2^{1021231332001} is an apocalyptic number.

It is an amenable number.

1021231332001 is a deficient number, since it is larger than the sum of its proper divisors (9369094899).

1021231332001 is an equidigital number, since it uses as much as digits as its factorization.

1021231332001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9369094898.

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

Adding to 1021231332001 its reverse (1002331321201), we get a palindrome (2023562653202).

The spelling of 1021231332001 in words is "one trillion, twenty-one billion, two hundred thirty-one million, three hundred thirty-two thousand, one".