121600106 has 4 divisors (see below), whose sum is σ = 182400162. Its totient is φ = 60800052.

The previous prime is 121600097. The next prime is 121600147. The reversal of 121600106 is 601006121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601006121 = 29 ⋅20724349.

It can be written as a sum of positive squares in only one way, i.e., 82973881 + 38626225 = 9109^2 + 6215^2 .

It is a super-2 number, since 2×121600106² = 29573171558422472, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30400025 + ... + 30400028.

Almost surely, 2^121600106 is an apocalyptic number.

121600106 is a deficient number, since it is larger than the sum of its proper divisors (60800056).

121600106 is an equidigital number, since it uses as much as digits as its factorization.

121600106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60800055.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 121600106 is about 11027.2438079513. The cubic root of 121600106 is about 495.4250758077.

Adding to 121600106 its reverse (601006121), we get a palindrome (722606227).

The spelling of 121600106 in words is "one hundred twenty-one million, six hundred thousand, one hundred six".