1212231033 has 12 divisors (see below), whose sum is σ = 1885692900. Its totient is φ = 745988256.

The previous prime is 1212231023. The next prime is 1212231043. The reversal of 1212231033 is 3301322121.

It is an interprime number because it is at equal distance from previous prime (1212231023) and next prime (1212231043).

It can be written as a sum of positive squares in 2 ways, for example, as 138227049 + 1074003984 = 11757^2 + 32772^2 .

It is not a de Polignac number, because 1212231033 - 2⁸ = 1212230777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212230997 and 1212231015.

It is not an unprimeable number, because it can be changed into a prime (1212231023) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5180358 + ... + 5180591.

It is an arithmetic number, because the mean of its divisors is an integer number (157141075).

Almost surely, 2^1212231033 is an apocalyptic number.

1212231033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1212231033 is a deficient number, since it is larger than the sum of its proper divisors (673461867).

1212231033 is a wasteful number, since it uses less digits than its factorization.

1212231033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10360968 (or 10360965 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1212231033 is about 34817.1083377124. The cubic root of 1212231033 is about 1066.2567640616.

Adding to 1212231033 its reverse (3301322121), we get a palindrome (4513553154).

The spelling of 1212231033 in words is "one billion, two hundred twelve million, two hundred thirty-one thousand, thirty-three".