1021323222001 has 4 divisors (see below), whose sum is σ = 1021325735232. Its totient is φ = 1021320708772.

The previous prime is 1021323221999. The next prime is 1021323222043. The reversal of 1021323222001 is 1002223231201.

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 1021323222001 - 2¹ = 1021323221999 is a prime.

It is a super-2 number, since 2×1021323222001² (a number of 25 digits) contains 22 as substring.

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 1021323222001.

It is not an unprimeable number, because it can be changed into a prime (1021323222061) 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, 491941 + ... + 1511506.

It is an arithmetic number, because the mean of its divisors is an integer number (255331433808).

Almost surely, 2^{1021323222001} is an apocalyptic number.

It is an amenable number.

1021323222001 is a deficient number, since it is larger than the sum of its proper divisors (2513231).

1021323222001 is an equidigital number, since it uses as much as digits as its factorization.

1021323222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513230.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1021323222001 its reverse (1002223231201), we get a palindrome (2023546453202).

The spelling of 1021323222001 in words is "one trillion, twenty-one billion, three hundred twenty-three million, two hundred twenty-two thousand, one".