212120122 has 8 divisors (see below), whose sum is σ = 332014176. Its totient is φ = 101448732.

The previous prime is 212120107. The next prime is 212120137. The reversal of 212120122 is 221021212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212120107) and next prime (212120137).

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

It is an unprimeable number.

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, 2305608 + ... + 2305699.

It is an arithmetic number, because the mean of its divisors is an integer number (41501772).

Almost surely, 2^212120122 is an apocalyptic number.

212120122 is a deficient number, since it is larger than the sum of its proper divisors (119894054).

212120122 is a wasteful number, since it uses less digits than its factorization.

212120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611332.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 212120122 is about 14564.3442008214. The cubic root of 212120122 is about 596.3857932666.

Adding to 212120122 its reverse (221021212), we get a palindrome (433141334).

The spelling of 212120122 in words is "two hundred twelve million, one hundred twenty thousand, one hundred twenty-two".