212111412 has 24 divisors (see below), whose sum is σ = 496008576. Its totient is φ = 70549248.

The previous prime is 212111399. The next prime is 212111437. The reversal of 212111412 is 214111212.

It is a super-2 number, since 2×212111412² = 89982502201267488, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 212111391 and 212111400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13533 + ... + 24644.

It is an arithmetic number, because the mean of its divisors is an integer number (20667024).

Almost surely, 2^212111412 is an apocalyptic number.

It is an amenable number.

212111412 is an abundant number, since it is smaller than the sum of its proper divisors (283897164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212111412 is a wasteful number, since it uses less digits than its factorization.

212111412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38647 (or 38645 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 212111412 is about 14564.0451798256. The cubic root of 212111412 is about 596.3776302954.

Adding to 212111412 its reverse (214111212), we get a palindrome (426222624).

The spelling of 212111412 in words is "two hundred twelve million, one hundred eleven thousand, four hundred twelve".