212103412 has 12 divisors (see below), whose sum is σ = 376409376. Its totient is φ = 104557880.

The previous prime is 212103383. The next prime is 212103413. The reversal of 212103412 is 214301212.

It is a super-4 number, since 4×212103412⁴ (a number of 34 digits) contains 4444 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212103413) 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, 373138 + ... + 373705.

It is an arithmetic number, because the mean of its divisors is an integer number (31367448).

Almost surely, 2^212103412 is an apocalyptic number.

It is an amenable number.

212103412 is a deficient number, since it is larger than the sum of its proper divisors (164305964).

212103412 is a wasteful number, since it uses less digits than its factorization.

212103412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746918 (or 746916 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 212103412 is about 14563.7705282664. The cubic root of 212103412 is about 596.3701325360.

Adding to 212103412 its reverse (214301212), we get a palindrome (426404624).

The spelling of 212103412 in words is "two hundred twelve million, one hundred three thousand, four hundred twelve".