121606699 has 2 divisors, whose sum is σ = 121606700. Its totient is φ = 121606698.

The previous prime is 121606687. The next prime is 121606747. The reversal of 121606699 is 996606121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121606699 - 2¹³ = 121598507 is a prime.

It is a Chen prime.

It is equal to p_6927961 and since 121606699 and 6927961 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (121606619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60803349 + 60803350.

It is an arithmetic number, because the mean of its divisors is an integer number (60803350).

Almost surely, 2^121606699 is an apocalyptic number.

121606699 is a deficient number, since it is larger than the sum of its proper divisors (1).

121606699 is an equidigital number, since it uses as much as digits as its factorization.

121606699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 121606699 is about 11027.5427453264. The cubic root of 121606699 is about 495.4340294142.

The spelling of 121606699 in words is "one hundred twenty-one million, six hundred six thousand, six hundred ninety-nine".