121144213 has 4 divisors (see below), whose sum is σ = 121433760. Its totient is φ = 120854668.

The previous prime is 121144211. The next prime is 121144229. The reversal of 121144213 is 312441121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121144213 - 2¹ = 121144211 is a prime.

It is a super-3 number, since 3×121144213³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121144211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144145 + ... + 144982.

It is an arithmetic number, because the mean of its divisors is an integer number (30358440).

Almost surely, 2^121144213 is an apocalyptic number.

It is an amenable number.

121144213 is a deficient number, since it is larger than the sum of its proper divisors (289547).

121144213 is an equidigital number, since it uses as much as digits as its factorization.

121144213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289546.

The product of its digits is 192, while the sum is 19.

The square root of 121144213 is about 11006.5531843534. The cubic root of 121144213 is about 494.8051649638.

Adding to 121144213 its reverse (312441121), we get a palindrome (433585334).

The spelling of 121144213 in words is "one hundred twenty-one million, one hundred forty-four thousand, two hundred thirteen".