1212205033 has 8 divisors (see below), whose sum is σ = 1317653568. Its totient is φ = 1108499664.

The previous prime is 1212205013. The next prime is 1212205079. The reversal of 1212205033 is 3305022121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212205033 - 2²¹ = 1210107881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212205033.

It is not an unprimeable number, because it can be changed into a prime (1212205003) 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 7 ways as a sum of consecutive naturals, for example, 434341 + ... + 437122.

It is an arithmetic number, because the mean of its divisors is an integer number (164706696).

Almost surely, 2^1212205033 is an apocalyptic number.

1212205033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1212205033 is a deficient number, since it is larger than the sum of its proper divisors (105448535).

1212205033 is a wasteful number, since it uses less digits than its factorization.

1212205033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871583.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1212205033 is about 34816.7349560524. The cubic root of 1212205033 is about 1066.2491409619.

Adding to 1212205033 its reverse (3305022121), we get a palindrome (4517227154).

It can be divided in two parts, 121220 and 5033, that added together give a triangular number (126253 = T₅₀₂).

The spelling of 1212205033 in words is "one billion, two hundred twelve million, two hundred five thousand, thirty-three".