11223557891247 has 16 divisors (see below), whose sum is σ = 16238899974528. Its totient is φ = 6854081151840.

The previous prime is 11223557891213. The next prime is 11223557891297. The reversal of 11223557891247 is 74219875532211.

It is not a de Polignac number, because 11223557891247 - 2¹² = 11223557887151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223557891297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1098405333 + ... + 1098415550.

It is an arithmetic number, because the mean of its divisors is an integer number (1014931248408).

Almost surely, 2^{11223557891247} is an apocalyptic number.

11223557891247 is a deficient number, since it is larger than the sum of its proper divisors (5015342083281).

11223557891247 is a wasteful number, since it uses less digits than its factorization.

11223557891247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196821030.

The product of its digits is 8467200, while the sum is 57.

The spelling of 11223557891247 in words is "eleven trillion, two hundred twenty-three billion, five hundred fifty-seven million, eight hundred ninety-one thousand, two hundred forty-seven".