1000321220023 has 16 divisors (see below), whose sum is σ = 1008775149984. Its totient is φ = 991896048000.

The previous prime is 1000321219973. The next prime is 1000321220047. The reversal of 1000321220023 is 3200221230001.

It is a cyclic number.

It is not a de Polignac number, because 1000321220023 - 2¹³ = 1000321211831 is a prime.

It is a super-2 number, since 2×1000321220023² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000321219979 and 1000321220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000321220623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181840773 + ... + 181846273.

It is an arithmetic number, because the mean of its divisors is an integer number (63048446874).

Almost surely, 2^{1000321220023} is an apocalyptic number.

1000321220023 is a deficient number, since it is larger than the sum of its proper divisors (8453929961).

1000321220023 is a wasteful number, since it uses less digits than its factorization.

1000321220023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7842.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1000321220023 its reverse (3200221230001), we get a palindrome (4200542450024).

The spelling of 1000321220023 in words is "one trillion, three hundred twenty-one million, two hundred twenty thousand, twenty-three".