121702061716611 has 4 divisors (see below), whose sum is σ = 162269415622152. Its totient is φ = 81134707811072.

The previous prime is 121702061716597. The next prime is 121702061716649. The reversal of 121702061716611 is 116617160207121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121702061716611 - 2¹⁷ = 121702061585539 is a prime.

It is a super-2 number, since 2×121702061716611² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121702061716661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20283676952766 + ... + 20283676952771.

It is an arithmetic number, because the mean of its divisors is an integer number (40567353905538).

Almost surely, 2^{121702061716611} is an apocalyptic number.

121702061716611 is a deficient number, since it is larger than the sum of its proper divisors (40567353905541).

121702061716611 is an equidigital number, since it uses as much as digits as its factorization.

121702061716611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40567353905540.

The product of its (nonzero) digits is 42336, while the sum is 42.

The spelling of 121702061716611 in words is "one hundred twenty-one trillion, seven hundred two billion, sixty-one million, seven hundred sixteen thousand, six hundred eleven".