121206113 has 8 divisors (see below), whose sum is σ = 144544128. Its totient is φ = 99373824.

The previous prime is 121206103. The next prime is 121206131. The reversal of 121206113 is 311602121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121206113 - 2⁴ = 121206097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121206091 and 121206100.

It is not an unprimeable number, because it can be changed into a prime (121206103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376256 + ... + 376577.

It is an arithmetic number, because the mean of its divisors is an integer number (18068016).

Almost surely, 2^121206113 is an apocalyptic number.

It is an amenable number.

121206113 is a deficient number, since it is larger than the sum of its proper divisors (23338015).

121206113 is an equidigital number, since it uses as much as digits as its factorization.

121206113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752863.

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

The square root of 121206113 is about 11009.3647863989. The cubic root of 121206113 is about 494.8894260380.

Adding to 121206113 its reverse (311602121), we get a palindrome (432808234).

The spelling of 121206113 in words is "one hundred twenty-one million, two hundred six thousand, one hundred thirteen".