121703715261 has 12 divisors (see below), whose sum is σ = 176428895292. Its totient is φ = 80842899456.

The previous prime is 121703715251. The next prime is 121703715293. The reversal of 121703715261 is 162517307121.

121703715261 is a `hidden beast` number, since 1 + 21 + 7 + 0 + 371 + 5 + 261 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7040888100 + 114662827161 = 83910^2 + 338619^2 .

It is not a de Polignac number, because 121703715261 - 2¹⁴ = 121703698877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121703715251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24406596 + ... + 24411581.

It is an arithmetic number, because the mean of its divisors is an integer number (14702407941).

Almost surely, 2^121703715261 is an apocalyptic number.

It is an amenable number.

121703715261 is a deficient number, since it is larger than the sum of its proper divisors (54725180031).

121703715261 is a wasteful number, since it uses less digits than its factorization.

121703715261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48818460 (or 48818457 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The spelling of 121703715261 in words is "one hundred twenty-one billion, seven hundred three million, seven hundred fifteen thousand, two hundred sixty-one".