1212550033 has 4 divisors (see below), whose sum is σ = 1212873508. Its totient is φ = 1212226560.

The previous prime is 1212550013. The next prime is 1212550061. The reversal of 1212550033 is 3300552121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3300552121 = 2803 ⋅1177507.

It can be written as a sum of positive squares in 2 ways, for example, as 79352464 + 1133197569 = 8908^2 + 33663^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212550033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212549986 and 1212550013.

It is not an unprimeable number, because it can be changed into a prime (1212550013) 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, 156048 + ... + 163633.

It is an arithmetic number, because the mean of its divisors is an integer number (303218377).

Almost surely, 2^1212550033 is an apocalyptic number.

It is an amenable number.

1212550033 is a deficient number, since it is larger than the sum of its proper divisors (323475).

1212550033 is an equidigital number, since it uses as much as digits as its factorization.

1212550033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323474.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1212550033 is about 34821.6891175600. The cubic root of 1212550033 is about 1066.3502847594.

The spelling of 1212550033 in words is "one billion, two hundred twelve million, five hundred fifty thousand, thirty-three".