212115412 has 12 divisors (see below), whose sum is σ = 371783776. Its totient is φ = 105891480.

The previous prime is 212115403. The next prime is 212115433. The reversal of 212115412 is 214511212.

It is a self number, because there is not a number n which added to its sum of digits gives 212115412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38664 + ... + 43807.

Almost surely, 2^212115412 is an apocalyptic number.

It is an amenable number.

212115412 is a deficient number, since it is larger than the sum of its proper divisors (159668364).

212115412 is a wasteful number, since it uses less digits than its factorization.

212115412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83118 (or 83116 counting only the distinct ones).

The product of its digits is 160, while the sum is 19.

The square root of 212115412 is about 14564.1825036629. The cubic root of 212115412 is about 596.3813791044.

Adding to 212115412 its reverse (214511212), we get a palindrome (426626624).

The spelling of 212115412 in words is "two hundred twelve million, one hundred fifteen thousand, four hundred twelve".