11220786127 has 4 divisors (see below), whose sum is σ = 11374495600. Its totient is φ = 11067076656.

The previous prime is 11220786121. The next prime is 11220786139. The reversal of 11220786127 is 72168702211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72168702211 = 26839 ⋅2688949.

It is a cyclic number.

It is not a de Polignac number, because 11220786127 - 2¹⁹ = 11220261839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220786121) 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, 76854627 + ... + 76854772.

It is an arithmetic number, because the mean of its divisors is an integer number (2843623900).

Almost surely, 2^11220786127 is an apocalyptic number.

11220786127 is a deficient number, since it is larger than the sum of its proper divisors (153709473).

11220786127 is an equidigital number, since it uses as much as digits as its factorization.

11220786127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153709472.

The product of its (nonzero) digits is 18816, while the sum is 37.

The spelling of 11220786127 in words is "eleven billion, two hundred twenty million, seven hundred eighty-six thousand, one hundred twenty-seven".