1232121230 has 16 divisors (see below), whose sum is σ = 2232705600. Its totient is φ = 489540192.

The previous prime is 1232121227. The next prime is 1232121239. The reversal of 1232121230 is 321212321.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1232121199 and 1232121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232121239) 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, 411974 + ... + 414953.

It is an arithmetic number, because the mean of its divisors is an integer number (139544100).

Almost surely, 2^1232121230 is an apocalyptic number.

1232121230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1232121230 is a deficient number, since it is larger than the sum of its proper divisors (1000584370).

1232121230 is a wasteful number, since it uses less digits than its factorization.

1232121230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827083.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1232121230 is about 35101.5844371732. The cubic root of 1232121230 is about 1072.0568436990.

Adding to 1232121230 its reverse (321212321), we get a palindrome (1553333551).

The spelling of 1232121230 in words is "one billion, two hundred thirty-two million, one hundred twenty-one thousand, two hundred thirty".