1202303221 has 4 divisors (see below), whose sum is σ = 1374060832. Its totient is φ = 1030545612.

The previous prime is 1202303191. The next prime is 1202303233. The reversal of 1202303221 is 1223032021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1223032021 = 4243 ⋅288247.

It is a cyclic number.

It is not a de Polignac number, because 1202303221 - 2¹⁵ = 1202270453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202303195 and 1202303204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202303281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85878795 + ... + 85878808.

It is an arithmetic number, because the mean of its divisors is an integer number (343515208).

Almost surely, 2^1202303221 is an apocalyptic number.

It is an amenable number.

1202303221 is a deficient number, since it is larger than the sum of its proper divisors (171757611).

1202303221 is an equidigital number, since it uses as much as digits as its factorization.

1202303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171757610.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1202303221 is about 34674.2443464886. The cubic root of 1202303221 is about 1063.3380062119.

Adding to 1202303221 its reverse (1223032021), we get a palindrome (2425335242).

The spelling of 1202303221 in words is "one billion, two hundred two million, three hundred three thousand, two hundred twenty-one".