1232121330 has 48 divisors (see below), whose sum is σ = 3494746944. Its totient is φ = 298695840.

The previous prime is 1232121313. The next prime is 1232121337. The reversal of 1232121330 is 331212321.

1232121330 is a `hidden beast` number, since 12 + 321 + 2 + 1 + 330 = 666.

1232121330 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1232121337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 621294 + ... + 623273.

It is an arithmetic number, because the mean of its divisors is an integer number (72807228).

Almost surely, 2^1232121330 is an apocalyptic number.

1232121330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1232121330 is an abundant number, since it is smaller than the sum of its proper divisors (2262625614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1232121330 is a wasteful number, since it uses less digits than its factorization.

1232121330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244591 (or 1244588 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1232121330 is about 35101.5858616103. The cubic root of 1232121330 is about 1072.0568727020.

Adding to 1232121330 its reverse (331212321), we get a palindrome (1563333651).

Subtracting from 1232121330 its reverse (331212321), we obtain a palindrome (900909009).

The spelling of 1232121330 in words is "one billion, two hundred thirty-two million, one hundred twenty-one thousand, three hundred thirty".