121449414527281 has 9 divisors (see below), whose sum is σ = 121677888113049. Its totient is φ = 121221369203844.

The previous prime is 121449414527269. The next prime is 121449414527297. The reversal of 121449414527281 is 182725414944121.

The square root of 121449414527281 is 11020409.

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

It is not a de Polignac number, because 121449414527281 - 2³⁵ = 121415054788913 is a prime.

It is a super-2 number, since 2×121449414527281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121449414527201) 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, 6028153650 + ... + 6028173796.

Almost surely, 2^{121449414527281} is an apocalyptic number.

121449414527281 is the 11020409-th square number.

121449414527281 is the 5510205-th centered octagonal number.

It is an amenable number.

121449414527281 is a deficient number, since it is larger than the sum of its proper divisors (228473585768).

121449414527281 is an frugal number, since it uses more digits than its factorization.

121449414527281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41388 (or 20694 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 55.

The spelling of 121449414527281 in words is "one hundred twenty-one trillion, four hundred forty-nine billion, four hundred fourteen million, five hundred twenty-seven thousand, two hundred eighty-one".