1225216111436 has 12 divisors (see below), whose sum is σ = 2144136089928. Its totient is φ = 612605800032.

The previous prime is 1225216111373. The next prime is 1225216111517. The reversal of 1225216111436 is 6341116125221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1225216111396 and 1225216111405.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1486895 + ... + 2159001.

It is an arithmetic number, because the mean of its divisors is an integer number (178678007494).

Almost surely, 2^{1225216111436} is an apocalyptic number.

It is an amenable number.

1225216111436 is a deficient number, since it is larger than the sum of its proper divisors (918919978492).

1225216111436 is a wasteful number, since it uses less digits than its factorization.

1225216111436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127848 (or 1127846 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The spelling of 1225216111436 in words is "one trillion, two hundred twenty-five billion, two hundred sixteen million, one hundred eleven thousand, four hundred thirty-six".