212111472 has 20 divisors (see below), whose sum is σ = 547954760. Its totient is φ = 70703808.

The previous prime is 212111467. The next prime is 212111477. The reversal of 212111472 is 274111212.

It is an interprime number because it is at equal distance from previous prime (212111467) and next prime (212111477).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111477) 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, 2209447 + ... + 2209542.

It is an arithmetic number, because the mean of its divisors is an integer number (27397738).

Almost surely, 2^212111472 is an apocalyptic number.

It is an amenable number.

212111472 is an abundant number, since it is smaller than the sum of its proper divisors (335843288).

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

212111472 is a wasteful number, since it uses less digits than its factorization.

212111472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419000 (or 4418994 counting only the distinct ones).

The product of its digits is 224, while the sum is 21.

The square root of 212111472 is about 14564.0472396927. The cubic root of 212111472 is about 596.3776865279.

Adding to 212111472 its reverse (274111212), we get a palindrome (486222684).

The spelling of 212111472 in words is "two hundred twelve million, one hundred eleven thousand, four hundred seventy-two".