1221423301 has 8 divisors (see below), whose sum is σ = 1399431680. Its totient is φ = 1044294768.

The previous prime is 1221423289. The next prime is 1221423367. The reversal of 1221423301 is 1033241221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221423301 - 2⁷ = 1221423173 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 (1221427301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216981 + ... + 222538.

It is an arithmetic number, because the mean of its divisors is an integer number (174928960).

Almost surely, 2^1221423301 is an apocalyptic number.

It is an amenable number.

1221423301 is a deficient number, since it is larger than the sum of its proper divisors (178008379).

1221423301 is an equidigital number, since it uses as much as digits as its factorization.

1221423301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439923.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1221423301 is about 34948.8669487295. The cubic root of 1221423301 is about 1068.9450985621.

Adding to 1221423301 its reverse (1033241221), we get a palindrome (2254664522).

The spelling of 1221423301 in words is "one billion, two hundred twenty-one million, four hundred twenty-three thousand, three hundred one".