121210113 has 8 divisors (see below), whose sum is σ = 165981568. Its totient is φ = 78622704.

The previous prime is 121210081. The next prime is 121210157. The reversal of 121210113 is 311012121.

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

It is not a de Polignac number, because 121210113 - 2⁵ = 121210081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121210183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545881 + ... + 546102.

It is an arithmetic number, because the mean of its divisors is an integer number (20747696).

Almost surely, 2^121210113 is an apocalyptic number.

It is an amenable number.

121210113 is a deficient number, since it is larger than the sum of its proper divisors (44771455).

121210113 is a wasteful number, since it uses less digits than its factorization.

121210113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092023.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 121210113 is about 11009.5464484237. The cubic root of 121210113 is about 494.8948700316.

Adding to 121210113 its reverse (311012121), we get a palindrome (432222234).

It can be divided in two parts, 1212 and 10113, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 121210113 in words is "one hundred twenty-one million, two hundred ten thousand, one hundred thirteen".