11751521227 has 2 divisors, whose sum is σ = 11751521228. Its totient is φ = 11751521226.

The previous prime is 11751521183. The next prime is 11751521231. The reversal of 11751521227 is 72212515711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11751521227 is a prime.

It is a super-2 number, since 2×11751521227² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11751521192 and 11751521201.

It is not a weakly prime, because it can be changed into another prime (11751521267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5875760613 + 5875760614.

It is an arithmetic number, because the mean of its divisors is an integer number (5875760614).

Almost surely, 2^11751521227 is an apocalyptic number.

11751521227 is a deficient number, since it is larger than the sum of its proper divisors (1).

11751521227 is an equidigital number, since it uses as much as digits as its factorization.

11751521227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9800, while the sum is 34.

The spelling of 11751521227 in words is "eleven billion, seven hundred fifty-one million, five hundred twenty-one thousand, two hundred twenty-seven".