121167344281 has 9 divisors (see below), whose sum is σ = 121579137151. Its totient is φ = 120756944992.

The previous prime is 121167344267. The next prime is 121167344299. The reversal of 121167344281 is 182443761121.

The square root of 121167344281 is 348091.

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., 74504432025 + 46662912256 = 272955^2 + 216016^2 .

It is not a de Polignac number, because 121167344281 - 2²⁵ = 121133789849 is a prime.

It is a super-2 number, since 2×121167344281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121167344261) 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, 204329121 + ... + 204329713.

Almost surely, 2^121167344281 is an apocalyptic number.

121167344281 is the 348091-st square number.

121167344281 is the 174046-th centered octagonal number.

It is an amenable number.

121167344281 is a deficient number, since it is larger than the sum of its proper divisors (411792870).

121167344281 is an frugal number, since it uses more digits than its factorization.

121167344281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 1180 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The spelling of 121167344281 in words is "one hundred twenty-one billion, one hundred sixty-seven million, three hundred forty-four thousand, two hundred eighty-one".