11251124217 has 12 divisors (see below), whose sum is σ = 16253364400. Its totient is φ = 7499946168.

The previous prime is 11251124201. The next prime is 11251124219. The reversal of 11251124217 is 71242115211.

11251124217 is a `hidden beast` number, since 1 + 125 + 112 + 421 + 7 = 666.

It is not a de Polignac number, because 11251124217 - 2⁴ = 11251124201 is a prime.

It is a super-2 number, since 2×11251124217² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11251124219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28998 + ... + 152784.

Almost surely, 2^11251124217 is an apocalyptic number.

It is an amenable number.

11251124217 is a deficient number, since it is larger than the sum of its proper divisors (5002240183).

11251124217 is a wasteful number, since it uses less digits than its factorization.

11251124217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133892 (or 133889 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

Adding to 11251124217 its reverse (71242115211), we get a palindrome (82493239428).

The spelling of 11251124217 in words is "eleven billion, two hundred fifty-one million, one hundred twenty-four thousand, two hundred seventeen".