1202322421 has 4 divisors (see below), whose sum is σ = 1202570892. Its totient is φ = 1202073952.

The previous prime is 1202322403. The next prime is 1202322427. The reversal of 1202322421 is 1242232021.

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 955675396 + 246647025 = 30914^2 + 15705^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202322421 - 2⁵ = 1202322389 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 (1202322427) 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, 116830 + ... + 126703.

It is an arithmetic number, because the mean of its divisors is an integer number (300642723).

Almost surely, 2^1202322421 is an apocalyptic number.

It is an amenable number.

1202322421 is a deficient number, since it is larger than the sum of its proper divisors (248471).

1202322421 is an equidigital number, since it uses as much as digits as its factorization.

1202322421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248470.

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

The square root of 1202322421 is about 34674.5212079417. The cubic root of 1202322421 is about 1063.3436664538.

Adding to 1202322421 its reverse (1242232021), we get a palindrome (2444554442).

The spelling of 1202322421 in words is "one billion, two hundred two million, three hundred twenty-two thousand, four hundred twenty-one".