11681221274 has 8 divisors (see below), whose sum is σ = 17539879968. Its totient is φ = 5834594620.

The previous prime is 11681221273. The next prime is 11681221283. The reversal of 11681221274 is 47212218611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (11681221273) 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, 3005582 + ... + 3009465.

It is an arithmetic number, because the mean of its divisors is an integer number (2192484996).

Almost surely, 2^11681221274 is an apocalyptic number.

11681221274 is a deficient number, since it is larger than the sum of its proper divisors (5858658694).

11681221274 is an equidigital number, since it uses as much as digits as its factorization.

11681221274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6016020.

The product of its digits is 10752, while the sum is 35.

Adding to 11681221274 its reverse (47212218611), we get a palindrome (58893439885).

The spelling of 11681221274 in words is "eleven billion, six hundred eighty-one million, two hundred twenty-one thousand, two hundred seventy-four".