11220898757121 has 81 divisors (see below), whose sum is σ = 16969024029321. Its totient is φ = 7144799030208.

The previous prime is 11220898757053. The next prime is 11220898757129. The reversal of 11220898757121 is 12175789802211.

The square root of 11220898757121 is 3349761.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1198203890625 + 10022694866496 = 1094625^2 + 3165864^2 .

It is not a de Polignac number, because 11220898757121 - 2¹³ = 11220898748929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11220898757129) 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 in 80 ways as a sum of consecutive naturals, for example, 40508659635 + ... + 40508659911.

Almost surely, 2^{11220898757121} is an apocalyptic number.

11220898757121 is the 3349761-st square number.

11220898757121 is the 1674881-st centered octagonal number.

It is an amenable number.

11220898757121 is a deficient number, since it is larger than the sum of its proper divisors (5748125272200).

11220898757121 is an frugal number, since it uses more digits than its factorization.

11220898757121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 54.

The spelling of 11220898757121 in words is "eleven trillion, two hundred twenty billion, eight hundred ninety-eight million, seven hundred fifty-seven thousand, one hundred twenty-one".