1233212145 has 64 divisors (see below), whose sum is σ = 2215358208. Its totient is φ = 580608000.

The previous prime is 1233212131. The next prime is 1233212171. The reversal of 1233212145 is 5412123321.

It is not a de Polignac number, because 1233212145 - 2¹⁰ = 1233211121 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2847849 + ... + 2848281.

It is an arithmetic number, because the mean of its divisors is an integer number (34614972).

Almost surely, 2^1233212145 is an apocalyptic number.

1233212145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1233212145 is a deficient number, since it is larger than the sum of its proper divisors (982146063).

1233212145 is a wasteful number, since it uses less digits than its factorization.

1233212145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914.

The product of its digits is 1440, while the sum is 24.

The square root of 1233212145 is about 35117.1203973219. The cubic root of 1233212145 is about 1072.3731485856.

Adding to 1233212145 its reverse (5412123321), we get a palindrome (6645335466).

The spelling of 1233212145 in words is "one billion, two hundred thirty-three million, two hundred twelve thousand, one hundred forty-five".