1248887454221 has 8 divisors (see below), whose sum is σ = 1364743677024. Its totient is φ = 1133418064720.

The previous prime is 1248887454209. The next prime is 1248887454233. The reversal of 1248887454221 is 1224547888421.

It is an interprime number because it is at equal distance from previous prime (1248887454209) and next prime (1248887454233).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1248887454221 is a prime.

It is a super-2 number, since 2×1248887454221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248887454281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96701570 + ... + 96714483.

It is an arithmetic number, because the mean of its divisors is an integer number (170592959628).

Almost surely, 2^{1248887454221} is an apocalyptic number.

1248887454221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1248887454221 is a deficient number, since it is larger than the sum of its proper divisors (115856222803).

1248887454221 is a wasteful number, since it uses less digits than its factorization.

1248887454221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193416651.

The product of its digits is 9175040, while the sum is 56.

The spelling of 1248887454221 in words is "one trillion, two hundred forty-eight billion, eight hundred eighty-seven million, four hundred fifty-four thousand, two hundred twenty-one".