11912222781449 has 8 divisors (see below), whose sum is σ = 12056153162592. Its totient is φ = 11768302153440.

The previous prime is 11912222781391. The next prime is 11912222781493. The reversal of 11912222781449 is 94418722221911.

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

It is a cyclic number.

It is not a de Polignac number, because 11912222781449 - 2³⁶ = 11843503304713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11912222781449.

It is not an unprimeable number, because it can be changed into a prime (11912222781149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34277 + ... + 4881149.

It is an arithmetic number, because the mean of its divisors is an integer number (1507019145324).

Almost surely, 2^{11912222781449} is an apocalyptic number.

It is an amenable number.

11912222781449 is a deficient number, since it is larger than the sum of its proper divisors (143930381143).

11912222781449 is an equidigital number, since it uses as much as digits as its factorization.

11912222781449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4876567.

The product of its digits is 1161216, while the sum is 53.

The spelling of 11912222781449 in words is "eleven trillion, nine hundred twelve billion, two hundred twenty-two million, seven hundred eighty-one thousand, four hundred forty-nine".