1002403034221 has 4 divisors (see below), whose sum is σ = 1002589325244. Its totient is φ = 1002216743200.

The previous prime is 1002403034177. The next prime is 1002403034261. The reversal of 1002403034221 is 1224303042001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 212073144196 + 790329890025 = 460514^2 + 889005^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002403034221 - 2¹³ = 1002403026029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002403034192 and 1002403034201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002403034261) 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, 93137440 + ... + 93148201.

It is an arithmetic number, because the mean of its divisors is an integer number (250647331311).

Almost surely, 2^{1002403034221} is an apocalyptic number.

It is an amenable number.

1002403034221 is a deficient number, since it is larger than the sum of its proper divisors (186291023).

1002403034221 is an equidigital number, since it uses as much as digits as its factorization.

1002403034221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186291022.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1002403034221 its reverse (1224303042001), we get a palindrome (2226706076222).

The spelling of 1002403034221 in words is "one trillion, two billion, four hundred three million, thirty-four thousand, two hundred twenty-one".