11503226217 has 32 divisors (see below), whose sum is σ = 18320198400. Its totient is φ = 6281146368.

The previous prime is 11503226191. The next prime is 11503226281. The reversal of 11503226217 is 71262230511.

It is not a de Polignac number, because 11503226217 - 2⁶ = 11503226153 is a prime.

It is a super-2 number, since 2×11503226217² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11503226617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38292 + ... + 156437.

It is an arithmetic number, because the mean of its divisors is an integer number (572506200).

Almost surely, 2^11503226217 is an apocalyptic number.

It is an amenable number.

11503226217 is a deficient number, since it is larger than the sum of its proper divisors (6816972183).

11503226217 is a wasteful number, since it uses less digits than its factorization.

11503226217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194865.

The product of its (nonzero) digits is 5040, while the sum is 30.

Adding to 11503226217 its reverse (71262230511), we get a palindrome (82765456728).

The spelling of 11503226217 in words is "eleven billion, five hundred three million, two hundred twenty-six thousand, two hundred seventeen".