1216132435 has 16 divisors (see below), whose sum is σ = 1699310016. Its totient is φ = 818183808.

The previous prime is 1216132427. The next prime is 1216132453. The reversal of 1216132435 is 5342316121.

It is a cyclic number.

It is not a de Polignac number, because 1216132435 - 2³ = 1216132427 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325944 + ... + 329653.

It is an arithmetic number, because the mean of its divisors is an integer number (106206876).

Almost surely, 2^1216132435 is an apocalyptic number.

1216132435 is a deficient number, since it is larger than the sum of its proper divisors (483177581).

1216132435 is an equidigital number, since it uses as much as digits as its factorization.

1216132435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655662.

The product of its digits is 4320, while the sum is 28.

The square root of 1216132435 is about 34873.0904136700. The cubic root of 1216132435 is about 1067.3994069607.

Adding to 1216132435 its reverse (5342316121), we get a palindrome (6558448556).

The spelling of 1216132435 in words is "one billion, two hundred sixteen million, one hundred thirty-two thousand, four hundred thirty-five".