1230202020321 has 6 divisors (see below), whose sum is σ = 1776958473810. Its totient is φ = 820134680208.

The previous prime is 1230202020319. The next prime is 1230202020329.

1230202020321 is a `hidden beast` number, since 1 + 2 + 302 + 0 + 20 + 20 + 321 = 666.

1230202020321 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 1153553329296 + 76648691025 = 1074036^2 + 276855^2 .

It is not a de Polignac number, because 1230202020321 - 2¹ = 1230202020319 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1230202020294 and 1230202020303.

It is not an unprimeable number, because it can be changed into a prime (1230202020329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68344556676 + ... + 68344556693.

It is an arithmetic number, because the mean of its divisors is an integer number (296159745635).

Almost surely, 2^{1230202020321} is an apocalyptic number.

It is an amenable number.

1230202020321 is a deficient number, since it is larger than the sum of its proper divisors (546756453489).

1230202020321 is a wasteful number, since it uses less digits than its factorization.

1230202020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136689113375 (or 136689113372 counting only the distinct ones).

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

The spelling of 1230202020321 in words is "one trillion, two hundred thirty billion, two hundred two million, twenty thousand, three hundred twenty-one".