212103213 has 24 divisors (see below), whose sum is σ = 346295520. Its totient is φ = 114821280.

The previous prime is 212103197. The next prime is 212103223. The reversal of 212103213 is 312301212.

It is not a de Polignac number, because 212103213 - 2⁴ = 212103197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212103192 and 212103201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212103223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35178 + ... + 40763.

It is an arithmetic number, because the mean of its divisors is an integer number (14428980).

Almost surely, 2^212103213 is an apocalyptic number.

It is an amenable number.

212103213 is a deficient number, since it is larger than the sum of its proper divisors (134192307).

212103213 is a wasteful number, since it uses less digits than its factorization.

212103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75977 (or 75970 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 212103213 is about 14563.7636962428. The cubic root of 212103213 is about 596.3699460268.

Adding to 212103213 its reverse (312301212), we get a palindrome (524404425).

The spelling of 212103213 in words is "two hundred twelve million, one hundred three thousand, two hundred thirteen".