11151015200721 has 24 divisors (see below), whose sum is σ = 17571726428256. Its totient is φ = 6758025743040.

The previous prime is 11151015200671. The next prime is 11151015200723. The reversal of 11151015200721 is 12700251015111.

11151015200721 is a `hidden beast` number, since 1 + 1 + 15 + 101 + 520 + 0 + 7 + 21 = 666.

It is not a de Polignac number, because 11151015200721 - 2¹³ = 11151015192529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11151015200723) 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 23 ways as a sum of consecutive naturals, for example, 2753146 + ... + 5466428.

It is an arithmetic number, because the mean of its divisors is an integer number (732155267844).

Almost surely, 2^{11151015200721} is an apocalyptic number.

11151015200721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11151015200721 is a deficient number, since it is larger than the sum of its proper divisors (6420711227535).

11151015200721 is a wasteful number, since it uses less digits than its factorization.

11151015200721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754813 (or 2754810 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 27.

Adding to 11151015200721 its reverse (12700251015111), we get a palindrome (23851266215832).

The spelling of 11151015200721 in words is "eleven trillion, one hundred fifty-one billion, fifteen million, two hundred thousand, seven hundred twenty-one".