1233132121 has 4 divisors (see below), whose sum is σ = 1327988452. Its totient is φ = 1138275792.

The previous prime is 1233132107. The next prime is 1233132139. The reversal of 1233132121 is 1212313321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 591219225 + 641912896 = 24315^2 + 25336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233132121 - 2⁷ = 1233131993 is a prime.

It is a super-2 number, since 2×1233132121² = 3041229655683917282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1233132721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47428146 + ... + 47428171.

It is an arithmetic number, because the mean of its divisors is an integer number (331997113).

Almost surely, 2^1233132121 is an apocalyptic number.

It is an amenable number.

1233132121 is a deficient number, since it is larger than the sum of its proper divisors (94856331).

1233132121 is an equidigital number, since it uses as much as digits as its factorization.

1233132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94856330.

The product of its digits is 216, while the sum is 19.

The square root of 1233132121 is about 35115.9809915656. The cubic root of 1233132121 is about 1072.3499524023.

Adding to 1233132121 its reverse (1212313321), we get a palindrome (2445445442).

The spelling of 1233132121 in words is "one billion, two hundred thirty-three million, one hundred thirty-two thousand, one hundred twenty-one".