1216432228007 has 4 divisors (see below), whose sum is σ = 1216616013480. Its totient is φ = 1216248442536.

The previous prime is 1216432227977. The next prime is 1216432228057. The reversal of 1216432228007 is 7008222346121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1216432228007 - 2⁶ = 1216432227943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216432228057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91882808 + ... + 91896045.

It is an arithmetic number, because the mean of its divisors is an integer number (304154003370).

Almost surely, 2^{1216432228007} is an apocalyptic number.

1216432228007 is a deficient number, since it is larger than the sum of its proper divisors (183785473).

1216432228007 is an equidigital number, since it uses as much as digits as its factorization.

1216432228007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183785472.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 1216432228007 in words is "one trillion, two hundred sixteen billion, four hundred thirty-two million, two hundred twenty-eight thousand, seven".