1212820165733 has 16 divisors (see below), whose sum is σ = 1324806603264. Its totient is φ = 1101122536560.

The previous prime is 1212820165723. The next prime is 1212820165751. The reversal of 1212820165733 is 3375610282121.

It is a cyclic number.

It is not a de Polignac number, because 1212820165733 - 2⁴ = 1212820165717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212820165723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100169066 + ... + 100181172.

It is an arithmetic number, because the mean of its divisors is an integer number (82800412704).

Almost surely, 2^{1212820165733} is an apocalyptic number.

It is an amenable number.

1212820165733 is a deficient number, since it is larger than the sum of its proper divisors (111986437531).

1212820165733 is a wasteful number, since it uses less digits than its factorization.

1212820165733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23272.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 1212820165733 in words is "one trillion, two hundred twelve billion, eight hundred twenty million, one hundred sixty-five thousand, seven hundred thirty-three".