11821077 has 6 divisors (see below), whose sum is σ = 17074902. Its totient is φ = 7880712.

The previous prime is 11821031. The next prime is 11821081. The reversal of 11821077 is 77012811.

It can be written as a sum of positive squares in only one way, i.e., 7322436 + 4498641 = 2706^2 + 2121^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11821077 is a prime.

It is a super-2 number, since 2×11821077² = 279475722879858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11821077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11821027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 656718 + ... + 656735.

It is an arithmetic number, because the mean of its divisors is an integer number (2845817).

Almost surely, 2^11821077 is an apocalyptic number.

It is an amenable number.

11821077 is a deficient number, since it is larger than the sum of its proper divisors (5253825).

11821077 is a wasteful number, since it uses less digits than its factorization.

11821077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313459 (or 1313456 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 11821077 is about 3438.1793146955. The cubic root of 11821077 is about 227.7992808748.

Adding to 11821077 its reverse (77012811), we get a palindrome (88833888).

The spelling of 11821077 in words is "eleven million, eight hundred twenty-one thousand, seventy-seven".