1233144121 has 4 divisors (see below), whose sum is σ = 1345248144. Its totient is φ = 1121040100.

The previous prime is 1233144109. The next prime is 1233144127. The reversal of 1233144121 is 1214413321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1233144121 - 2⁷ = 1233143993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1233144092 and 1233144101.

It is not an unprimeable number, because it can be changed into a prime (1233144127) 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, 56051995 + ... + 56052016.

It is an arithmetic number, because the mean of its divisors is an integer number (336312036).

Almost surely, 2^1233144121 is an apocalyptic number.

1233144121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1233144121 is a deficient number, since it is larger than the sum of its proper divisors (112104023).

1233144121 is a wasteful number, since it uses less digits than its factorization.

1233144121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112104022.

The product of its digits is 576, while the sum is 22.

The square root of 1233144121 is about 35116.1518535275. The cubic root of 1233144121 is about 1072.3534308502.

Adding to 1233144121 its reverse (1214413321), we get a palindrome (2447557442).

It can be divided in two parts, 12 and 33144121, that added together give a palindrome (33144133).

The spelling of 1233144121 in words is "one billion, two hundred thirty-three million, one hundred forty-four thousand, one hundred twenty-one".