121444214113 has 4 divisors (see below), whose sum is σ = 121582691860. Its totient is φ = 121305736368.

The previous prime is 121444214081. The next prime is 121444214147. The reversal of 121444214113 is 311412444121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76012144209 + 45432069904 = 275703^2 + 213148^2 .

It is a cyclic number.

It is not a de Polignac number, because 121444214113 - 2⁵ = 121444214081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121444214173) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 69237558 + ... + 69239311.

It is an arithmetic number, because the mean of its divisors is an integer number (30395672965).

Almost surely, 2^121444214113 is an apocalyptic number.

It is an amenable number.

121444214113 is a deficient number, since it is larger than the sum of its proper divisors (138477747).

121444214113 is an equidigital number, since it uses as much as digits as its factorization.

121444214113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138477746.

The product of its digits is 3072, while the sum is 28.

Adding to 121444214113 its reverse (311412444121), we get a palindrome (432856658234).

The spelling of 121444214113 in words is "one hundred twenty-one billion, four hundred forty-four million, two hundred fourteen thousand, one hundred thirteen".