11921130384601 has 9 divisors (see below), whose sum is σ = 12581650057503. Its totient is φ = 11293640321040.

The previous prime is 11921130384599. The next prime is 11921130384613. The reversal of 11921130384601 is 10648303112911.

The square root of 11921130384601 is 3452699.

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

It can be written as a sum of positive squares in only one way, i.e., 1785566735001 + 10135563649600 = 1336251^2 + 3183640^2 .

It is not a de Polignac number, because 11921130384601 - 2¹ = 11921130384599 is a prime.

It is a super-2 number, since 2×11921130384601² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11921130384671) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 65510421 + ... + 65692141.

Almost surely, 2^{11921130384601} is an apocalyptic number.

11921130384601 is the 3452699-th square number.

11921130384601 is the 1726350-th centered octagonal number.

It is an amenable number.

11921130384601 is a deficient number, since it is larger than the sum of its proper divisors (660519672902).

11921130384601 is an frugal number, since it uses more digits than its factorization.

11921130384601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363480 (or 181740 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 11921130384601 in words is "eleven trillion, nine hundred twenty-one billion, one hundred thirty million, three hundred eighty-four thousand, six hundred one".