1216273833411 has 64 divisors (see below), whose sum is σ = 2022167347200. Its totient is φ = 633127487616.

The previous prime is 1216273833407. The next prime is 1216273833413. The reversal of 1216273833411 is 1143383726121.

It is not a de Polignac number, because 1216273833411 - 2² = 1216273833407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1216273833413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49311400 + ... + 49336058.

It is an arithmetic number, because the mean of its divisors is an integer number (31596364800).

Almost surely, 2^{1216273833411} is an apocalyptic number.

1216273833411 is a deficient number, since it is larger than the sum of its proper divisors (805893513789).

1216273833411 is a wasteful number, since it uses less digits than its factorization.

1216273833411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27048.

The product of its digits is 145152, while the sum is 42.

The spelling of 1216273833411 in words is "one trillion, two hundred sixteen billion, two hundred seventy-three million, eight hundred thirty-three thousand, four hundred eleven".