1232210421 has 64 divisors (see below), whose sum is σ = 2028579840. Its totient is φ = 734469120.

The previous prime is 1232210411. The next prime is 1232210437. The reversal of 1232210421 is 1240122321.

It is a happy number.

1232210421 is a `hidden beast` number, since 1 + 2 + 32 + 210 + 421 = 666.

It is not a de Polignac number, because 1232210421 - 2⁷ = 1232210293 is a prime.

It is a super-3 number, since 3×1232210421³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1232210394 and 1232210403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232210411) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1863831 + ... + 1864491.

It is an arithmetic number, because the mean of its divisors is an integer number (31696560).

Almost surely, 2^1232210421 is an apocalyptic number.

It is an amenable number.

1232210421 is a deficient number, since it is larger than the sum of its proper divisors (796369419).

1232210421 is a wasteful number, since it uses less digits than its factorization.

1232210421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1232210421 is about 35102.8548838980. The cubic root of 1232210421 is about 1072.0827111522.

Adding to 1232210421 its reverse (1240122321), we get a palindrome (2472332742).

The spelling of 1232210421 in words is "one billion, two hundred thirty-two million, two hundred ten thousand, four hundred twenty-one".