1228213685485 has 16 divisors (see below), whose sum is σ = 1483320189312. Its totient is φ = 976262414400.

The previous prime is 1228213685423. The next prime is 1228213685497. The reversal of 1228213685485 is 5845863128221.

It is a de Polignac number, because none of the positive numbers 2^k-1228213685485 is a prime.

It is a Duffinian number.

It is a congruent 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, 26047080 + ... + 26094190.

It is an arithmetic number, because the mean of its divisors is an integer number (92707511832).

Almost surely, 2^{1228213685485} is an apocalyptic number.

It is an amenable number.

1228213685485 is a deficient number, since it is larger than the sum of its proper divisors (255106503827).

1228213685485 is a wasteful number, since it uses less digits than its factorization.

1228213685485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80484.

The product of its digits is 7372800, while the sum is 55.

The spelling of 1228213685485 in words is "one trillion, two hundred twenty-eight billion, two hundred thirteen million, six hundred eighty-five thousand, four hundred eighty-five".