121751447041 has 15 divisors (see below), whose sum is σ = 142054852163. Its totient is φ = 104343728160.

The previous prime is 121751447017. The next prime is 121751447047. The reversal of 121751447041 is 140744157121.

The square root of 121751447041 is 348929.

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., 2754045441 + 118997401600 = 52479^2 + 344960^2 .

It is not a de Polignac number, because 121751447041 - 2²⁷ = 121617229313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121751447047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 17093961 + ... + 17101081.

Almost surely, 2^121751447041 is an apocalyptic number.

121751447041 is the 348929-th square number.

121751447041 is the 174465-th centered octagonal number.

It is an amenable number.

121751447041 is a deficient number, since it is larger than the sum of its proper divisors (20303405122).

121751447041 is an frugal number, since it uses more digits than its factorization.

121751447041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14270 (or 7128 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 121751447041 in words is "one hundred twenty-one billion, seven hundred fifty-one million, four hundred forty-seven thousand, forty-one".