1003402004221 has 4 divisors (see below), whose sum is σ = 1003413156700. Its totient is φ = 1003390851744.

The previous prime is 1003402004207. The next prime is 1003402004249. The reversal of 1003402004221 is 1224002043001.

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 352225632196 + 651176372025 = 593486^2 + 806955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003402004221 - 2³¹ = 1001254520573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003402004291) 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, 5440176 + ... + 5621593.

It is an arithmetic number, because the mean of its divisors is an integer number (250853289175).

Almost surely, 2^{1003402004221} is an apocalyptic number.

It is an amenable number.

1003402004221 is a deficient number, since it is larger than the sum of its proper divisors (11152479).

1003402004221 is an equidigital number, since it uses as much as digits as its factorization.

1003402004221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11152478.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 1003402004221 its reverse (1224002043001), we get a palindrome (2227404047222).

The spelling of 1003402004221 in words is "one trillion, three billion, four hundred two million, four thousand, two hundred twenty-one".