1248078472221 has 16 divisors (see below), whose sum is σ = 1940646800000. Its totient is φ = 713187697824.

The previous prime is 1248078472211. The next prime is 1248078472231. The reversal of 1248078472221 is 1222748708421.

It is an interprime number because it is at equal distance from previous prime (1248078472211) and next prime (1248078472231).

It is not a de Polignac number, because 1248078472221 - 2⁹ = 1248078471709 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 (1248078472211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 606451096 + ... + 606453153.

It is an arithmetic number, because the mean of its divisors is an integer number (121290425000).

Almost surely, 2^{1248078472221} is an apocalyptic number.

It is an amenable number.

1248078472221 is a deficient number, since it is larger than the sum of its proper divisors (692568327779).

1248078472221 is an equidigital number, since it uses as much as digits as its factorization.

1248078472221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212904273 (or 1212904259 counting only the distinct ones).

The product of its (nonzero) digits is 802816, while the sum is 48.

The spelling of 1248078472221 in words is "one trillion, two hundred forty-eight billion, seventy-eight million, four hundred seventy-two thousand, two hundred twenty-one".