11224871381 has 2 divisors, whose sum is σ = 11224871382. Its totient is φ = 11224871380.

The previous prime is 11224871369. The next prime is 11224871387. The reversal of 11224871381 is 18317842211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9558190756 + 1666680625 = 97766^2 + 40825^2 .

It is a cyclic number.

It is not a de Polignac number, because 11224871381 - 2²² = 11220677077 is a prime.

It is a super-2 number, since 2×11224871381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11224871387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5612435690 + 5612435691.

It is an arithmetic number, because the mean of its divisors is an integer number (5612435691).

Almost surely, 2^11224871381 is an apocalyptic number.

It is an amenable number.

11224871381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11224871381 is an equidigital number, since it uses as much as digits as its factorization.

11224871381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 38.

The spelling of 11224871381 in words is "eleven billion, two hundred twenty-four million, eight hundred seventy-one thousand, three hundred eighty-one".