1233201421 has 8 divisors (see below), whose sum is σ = 1294560000. Its totient is φ = 1173191520.

The previous prime is 1233201383. The next prime is 1233201427. The reversal of 1233201421 is 1241023321.

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 1233201421 - 2⁷ = 1233201293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233201427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335296 + ... + 338953.

It is an arithmetic number, because the mean of its divisors is an integer number (161820000).

Almost surely, 2^1233201421 is an apocalyptic number.

It is an amenable number.

1233201421 is a deficient number, since it is larger than the sum of its proper divisors (61358579).

1233201421 is an equidigital number, since it uses as much as digits as its factorization.

1233201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674339.

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

The square root of 1233201421 is about 35116.9677079329. The cubic root of 1233201421 is about 1072.3700401280.

Adding to 1233201421 its reverse (1241023321), we get a palindrome (2474224742).

The spelling of 1233201421 in words is "one billion, two hundred thirty-three million, two hundred one thousand, four hundred twenty-one".