121606708650667 has 2 divisors, whose sum is σ = 121606708650668. Its totient is φ = 121606708650666.

The previous prime is 121606708650631. The next prime is 121606708650773. The reversal of 121606708650667 is 766056807606121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121606708650667 - 2²³ = 121606700262059 is a prime.

It is not a weakly prime, because it can be changed into another prime (121606708650607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60803354325333 + 60803354325334.

It is an arithmetic number, because the mean of its divisors is an integer number (60803354325334).

Almost surely, 2^{121606708650667} is an apocalyptic number.

121606708650667 is a deficient number, since it is larger than the sum of its proper divisors (1).

121606708650667 is an equidigital number, since it uses as much as digits as its factorization.

121606708650667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 121606708650667 in words is "one hundred twenty-one trillion, six hundred six billion, seven hundred eight million, six hundred fifty thousand, six hundred sixty-seven".