1232121375 has 80 divisors (see below), whose sum is σ = 2329902432. Its totient is φ = 647740800.

The previous prime is 1232121343. The next prime is 1232121383. The reversal of 1232121375 is 5731212321.

1232121375 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1232121375 - 2⁵ = 1232121343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 738292 + ... + 739958.

Almost surely, 2^1232121375 is an apocalyptic number.

1232121375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1232121375 is a deficient number, since it is larger than the sum of its proper divisors (1097781057).

1232121375 is an equidigital number, since it uses as much as digits as its factorization.

1232121375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767 (or 1748 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 1232121375 is about 35101.5865026070. The cubic root of 1232121375 is about 1072.0568857534.

Adding to 1232121375 its reverse (5731212321), we get a palindrome (6963333696).

The spelling of 1232121375 in words is "one billion, two hundred thirty-two million, one hundred twenty-one thousand, three hundred seventy-five".