1216010133 has 24 divisors (see below), whose sum is σ = 1894838400. Its totient is φ = 747021600.

The previous prime is 1216010101. The next prime is 1216010137. The reversal of 1216010133 is 3310106121.

It is not a de Polignac number, because 1216010133 - 2⁵ = 1216010101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216010137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61408 + ... + 78758.

It is an arithmetic number, because the mean of its divisors is an integer number (78951600).

Almost surely, 2^1216010133 is an apocalyptic number.

1216010133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1216010133 is a deficient number, since it is larger than the sum of its proper divisors (678828267).

1216010133 is a wasteful number, since it uses less digits than its factorization.

1216010133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17969 (or 17966 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1216010133 is about 34871.3368398747. The cubic root of 1216010133 is about 1067.3636242737.

Adding to 1216010133 its reverse (3310106121), we get a palindrome (4526116254).

The spelling of 1216010133 in words is "one billion, two hundred sixteen million, ten thousand, one hundred thirty-three".