11012121604357 has 2 divisors, whose sum is σ = 11012121604358. Its totient is φ = 11012121604356.

The previous prime is 11012121604321. The next prime is 11012121604397. The reversal of 11012121604357 is 75340612121011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6032324054241 + 4979797550116 = 2456079^2 + 2231546^2 .

It is an emirp because it is prime and its reverse (75340612121011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11012121604357 - 2³¹ = 11009974120709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012121604397) 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, 5506060802178 + 5506060802179.

It is an arithmetic number, because the mean of its divisors is an integer number (5506060802179).

Almost surely, 2^{11012121604357} is an apocalyptic number.

It is an amenable number.

11012121604357 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012121604357 is an equidigital number, since it uses as much as digits as its factorization.

11012121604357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

Adding to 11012121604357 its reverse (75340612121011), we get a palindrome (86352733725368).

The spelling of 11012121604357 in words is "eleven trillion, twelve billion, one hundred twenty-one million, six hundred four thousand, three hundred fifty-seven".