121466887441 has 9 divisors (see below), whose sum is σ = 122766201201. Its totient is φ = 120181193472.

The previous prime is 121466887433. The next prime is 121466887447. The reversal of 121466887441 is 144788664121.

The square root of 121466887441 is 348521.

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 6735649041 + 114731238400 = 82071^2 + 338720^2 .

It is not a de Polignac number, because 121466887441 - 2³ = 121466887433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121466887447) 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, 33804741 + ... + 33808333.

Almost surely, 2^121466887441 is an apocalyptic number.

121466887441 is the 348521-st square number.

121466887441 is the 174261-st centered octagonal number.

It is an amenable number.

121466887441 is a deficient number, since it is larger than the sum of its proper divisors (1299313760).

121466887441 is an frugal number, since it uses more digits than its factorization.

121466887441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7380 (or 3690 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 52.

The spelling of 121466887441 in words is "one hundred twenty-one billion, four hundred sixty-six million, eight hundred eighty-seven thousand, four hundred forty-one".