1302202021323 has 16 divisors (see below), whose sum is σ = 1985447649536. Its totient is φ = 743688012960.

The previous prime is 1302202021277. The next prime is 1302202021349. The reversal of 1302202021323 is 3231202022031.

It is a happy number.

It is not a de Polignac number, because 1302202021323 - 2¹⁰ = 1302202020299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 1302202021323.

It is not an unprimeable number, because it can be changed into a prime (1302202021223) 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 15 ways as a sum of consecutive naturals, for example, 17772061 + ... + 17845182.

It is an arithmetic number, because the mean of its divisors is an integer number (124090478096).

Almost surely, 2^{1302202021323} is an apocalyptic number.

1302202021323 is a deficient number, since it is larger than the sum of its proper divisors (683245628213).

1302202021323 is a wasteful number, since it uses less digits than its factorization.

1302202021323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35618994.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1302202021323 its reverse (3231202022031), we get a palindrome (4533404043354).

The spelling of 1302202021323 in words is "one trillion, three hundred two billion, two hundred two million, twenty-one thousand, three hundred twenty-three".