1302222421 has 4 divisors (see below), whose sum is σ = 1314392832. Its totient is φ = 1290052012.

The previous prime is 1302222403. The next prime is 1302222433. The reversal of 1302222421 is 1242222031.

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: 1242222031 = 3217 ⋅386143.

It is a cyclic number.

It is not a de Polignac number, because 1302222421 - 2⁹ = 1302221909 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 (1302222451) 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, 6085045 + ... + 6085258.

It is an arithmetic number, because the mean of its divisors is an integer number (328598208).

Almost surely, 2^1302222421 is an apocalyptic number.

It is an amenable number.

1302222421 is a deficient number, since it is larger than the sum of its proper divisors (12170411).

1302222421 is a wasteful number, since it uses less digits than its factorization.

1302222421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12170410.

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

The square root of 1302222421 is about 36086.3190281303. The cubic root of 1302222421 is about 1092.0144609019.

Adding to 1302222421 its reverse (1242222031), we get a palindrome (2544444452).

The spelling of 1302222421 in words is "one billion, three hundred two million, two hundred twenty-two thousand, four hundred twenty-one".