11651115122 has 4 divisors (see below), whose sum is σ = 17476672686. Its totient is φ = 5825557560.

The previous prime is 11651115097. The next prime is 11651115127. The reversal of 11651115122 is 22151115611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22151115611 = 223 ⋅99332357.

It can be written as a sum of positive squares in only one way, i.e., 11269733281 + 381381841 = 106159^2 + 19529^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11651115091 and 11651115100.

It is not an unprimeable number, because it can be changed into a prime (11651115127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2912778779 + ... + 2912778782.

Almost surely, 2^11651115122 is an apocalyptic number.

11651115122 is a deficient number, since it is larger than the sum of its proper divisors (5825557564).

11651115122 is an equidigital number, since it uses as much as digits as its factorization.

11651115122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5825557563.

The product of its digits is 600, while the sum is 26.

The spelling of 11651115122 in words is "eleven billion, six hundred fifty-one million, one hundred fifteen thousand, one hundred twenty-two".