1216000501235 has 32 divisors (see below), whose sum is σ = 1573539051840. Its totient is φ = 896774976000.

The previous prime is 1216000501231. The next prime is 1216000501283. The reversal of 1216000501235 is 5321050006121.

It is not a de Polignac number, because 1216000501235 - 2² = 1216000501231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1216000501231) 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 31 ways as a sum of consecutive naturals, for example, 188494760 + ... + 188501210.

It is an arithmetic number, because the mean of its divisors is an integer number (49173095370).

Almost surely, 2^{1216000501235} is an apocalyptic number.

1216000501235 is a deficient number, since it is larger than the sum of its proper divisors (357538550605).

1216000501235 is a wasteful number, since it uses less digits than its factorization.

1216000501235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9879.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 1216000501235 its reverse (5321050006121), we get a palindrome (6537050507356).

The spelling of 1216000501235 in words is "one trillion, two hundred sixteen billion, five hundred one thousand, two hundred thirty-five".