1216435133 has 8 divisors (see below), whose sum is σ = 1262695680. Its totient is φ = 1170613440.

The previous prime is 1216435123. The next prime is 1216435139. The reversal of 1216435133 is 3315346121.

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 1216435133 - 2⁶ = 1216435069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1216435096 and 1216435105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216435139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104060 + ... + 115157.

It is an arithmetic number, because the mean of its divisors is an integer number (157836960).

Almost surely, 2^1216435133 is an apocalyptic number.

It is an amenable number.

1216435133 is a deficient number, since it is larger than the sum of its proper divisors (46260547).

1216435133 is a wasteful number, since it uses less digits than its factorization.

1216435133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219427.

The product of its digits is 6480, while the sum is 29.

The square root of 1216435133 is about 34877.4301375546. The cubic root of 1216435133 is about 1067.4879589564.

The spelling of 1216435133 in words is "one billion, two hundred sixteen million, four hundred thirty-five thousand, one hundred thirty-three".