1020002221323 has 16 divisors (see below), whose sum is σ = 1515101526400. Its totient is φ = 678207274920.

The previous prime is 1020002221253. The next prime is 1020002221331. The reversal of 1020002221323 is 3231222000201.

It is not a de Polignac number, because 1020002221323 - 2¹⁴ = 1020002204939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020002221296 and 1020002221305.

It is not an unprimeable number, because it can be changed into a prime (1020002221123) 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, 49828633 + ... + 49849098.

It is an arithmetic number, because the mean of its divisors is an integer number (94693845400).

Almost surely, 2^{1020002221323} is an apocalyptic number.

1020002221323 is a deficient number, since it is larger than the sum of its proper divisors (495099305077).

1020002221323 is an equidigital number, since it uses as much as digits as its factorization.

1020002221323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99678119 (or 99678113 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1020002221323 its reverse (3231222000201), we get a palindrome (4251224221524).

The spelling of 1020002221323 in words is "one trillion, twenty billion, two million, two hundred twenty-one thousand, three hundred twenty-three".