1232121320 has 32 divisors (see below), whose sum is σ = 2775215520. Its totient is φ = 492325440.

The previous prime is 1232121313. The next prime is 1232121337. The reversal of 1232121320 is 231212321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22979 + ... + 54701.

It is an arithmetic number, because the mean of its divisors is an integer number (86725485).

Almost surely, 2^1232121320 is an apocalyptic number.

1232121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232121320 is an abundant number, since it is smaller than the sum of its proper divisors (1543094200).

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

1232121320 is a wasteful number, since it uses less digits than its factorization.

1232121320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32705 (or 32701 counting only the distinct ones).

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

The square root of 1232121320 is about 35101.5857191666. The cubic root of 1232121320 is about 1072.0568698017.

Adding to 1232121320 its reverse (231212321), we get a palindrome (1463333641).

The spelling of 1232121320 in words is "one billion, two hundred thirty-two million, one hundred twenty-one thousand, three hundred twenty".