212212103 has 4 divisors (see below), whose sum is σ = 212359608. Its totient is φ = 212064600.

The previous prime is 212212093. The next prime is 212212123. The reversal of 212212103 is 301212212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212212103 - 2²⁶ = 145103239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212123) 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, 71573 + ... + 74478.

It is an arithmetic number, because the mean of its divisors is an integer number (53089902).

Almost surely, 2^212212103 is an apocalyptic number.

212212103 is a deficient number, since it is larger than the sum of its proper divisors (147505).

212212103 is a wasteful number, since it uses less digits than its factorization.

212212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147504.

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

The square root of 212212103 is about 14567.5016045992. The cubic root of 212212103 is about 596.4719837924.

Adding to 212212103 its reverse (301212212), we get a palindrome (513424315).

The spelling of 212212103 in words is "two hundred twelve million, two hundred twelve thousand, one hundred three".