1228271786356 has 12 divisors (see below), whose sum is σ = 2150231704992. Its totient is φ = 613919870648.

The previous prime is 1228271786353. The next prime is 1228271786359. The reversal of 1228271786356 is 6536871728221.

It is an interprime number because it is at equal distance from previous prime (1228271786353) and next prime (1228271786359).

It is a self number, because there is not a number n which added to its sum of digits gives 1228271786356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228271786351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53992840 + ... + 54015583.

It is an arithmetic number, because the mean of its divisors is an integer number (179185975416).

Almost surely, 2^{1228271786356} is an apocalyptic number.

It is an amenable number.

1228271786356 is a deficient number, since it is larger than the sum of its proper divisors (921959918636).

1228271786356 is a wasteful number, since it uses less digits than its factorization.

1228271786356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108011270 (or 108011268 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 58.

The spelling of 1228271786356 in words is "one trillion, two hundred twenty-eight billion, two hundred seventy-one million, seven hundred eighty-six thousand, three hundred fifty-six".