122012213 has 8 divisors (see below), whose sum is σ = 129674520. Its totient is φ = 114403840.

The previous prime is 122012197. The next prime is 122012257. The reversal of 122012213 is 312210221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1495729 + 120516484 = 1223^2 + 10978^2 .

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 122012213 - 2⁴ = 122012197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122012713) 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 7 ways as a sum of consecutive naturals, for example, 8768 + ... + 17913.

It is an arithmetic number, because the mean of its divisors is an integer number (16209315).

Almost surely, 2^122012213 is an apocalyptic number.

It is an amenable number.

122012213 is a deficient number, since it is larger than the sum of its proper divisors (7662307).

122012213 is a wasteful number, since it uses less digits than its factorization.

122012213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26967.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 122012213 is about 11045.9138598850. The cubic root of 122012213 is about 495.9841157006.

Adding to 122012213 its reverse (312210221), we get a palindrome (434222434).

The spelling of 122012213 in words is "one hundred twenty-two million, twelve thousand, two hundred thirteen".