1202403400221 has 4 divisors (see below), whose sum is σ = 1603204533632. Its totient is φ = 801602266812.

The previous prime is 1202403400217. The next prime is 1202403400267. The reversal of 1202403400221 is 1220043042021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1202403400221 - 2² = 1202403400217 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 (1202403400321) 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, 200400566701 + ... + 200400566706.

It is an arithmetic number, because the mean of its divisors is an integer number (400801133408).

Almost surely, 2^{1202403400221} is an apocalyptic number.

It is an amenable number.

1202403400221 is a deficient number, since it is larger than the sum of its proper divisors (400801133411).

1202403400221 is an equidigital number, since it uses as much as digits as its factorization.

1202403400221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400801133410.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 1202403400221 its reverse (1220043042021), we get a palindrome (2422446442242).

The spelling of 1202403400221 in words is "one trillion, two hundred two billion, four hundred three million, four hundred thousand, two hundred twenty-one".