213124012 has 12 divisors (see below), whose sum is σ = 374516296. Its totient is φ = 106119360.

The previous prime is 213123973. The next prime is 213124013. The reversal of 213124012 is 210421312.

It is a super-2 number, since 2×213124012² = 90843688981952288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213124013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109578 + ... + 111505.

Almost surely, 2^213124012 is an apocalyptic number.

It is an amenable number.

213124012 is a deficient number, since it is larger than the sum of its proper divisors (161392284).

213124012 is a wasteful number, since it uses less digits than its factorization.

213124012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221328 (or 221326 counting only the distinct ones).

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

The square root of 213124012 is about 14598.7674822226. The cubic root of 213124012 is about 597.3251410851.

Adding to 213124012 its reverse (210421312), we get a palindrome (423545324).

The spelling of 213124012 in words is "two hundred thirteen million, one hundred twenty-four thousand, twelve".