11620166227 has 4 divisors (see below), whose sum is σ = 11621946040. Its totient is φ = 11618386416.

The previous prime is 11620166197. The next prime is 11620166267. The reversal of 11620166227 is 72266102611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11620166227 is a prime.

It is a super-2 number, since 2×11620166227² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11620166192 and 11620166201.

It is not an unprimeable number, because it can be changed into a prime (11620166267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880077 + ... + 893182.

It is an arithmetic number, because the mean of its divisors is an integer number (2905486510).

Almost surely, 2^11620166227 is an apocalyptic number.

11620166227 is a deficient number, since it is larger than the sum of its proper divisors (1779813).

11620166227 is an equidigital number, since it uses as much as digits as its factorization.

11620166227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779812.

The product of its (nonzero) digits is 12096, while the sum is 34.

Adding to 11620166227 its reverse (72266102611), we get a palindrome (83886268838).

The spelling of 11620166227 in words is "eleven billion, six hundred twenty million, one hundred sixty-six thousand, two hundred twenty-seven".