212113572 has 24 divisors (see below), whose sum is σ = 539925792. Its totient is φ = 64276800.

The previous prime is 212113571. The next prime is 212113589. The reversal of 212113572 is 275311212.

It is not an unprimeable number, because it can be changed into a prime (212113571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803329 + ... + 803592.

It is an arithmetic number, because the mean of its divisors is an integer number (22496908).

Almost surely, 2^212113572 is an apocalyptic number.

212113572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212113572 is an abundant number, since it is smaller than the sum of its proper divisors (327812220).

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

212113572 is a wasteful number, since it uses less digits than its factorization.

212113572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606939 (or 1606937 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 212113572 is about 14564.1193348585. The cubic root of 212113572 is about 596.3796546581.

Adding to 212113572 its reverse (275311212), we get a palindrome (487424784).

The spelling of 212113572 in words is "two hundred twelve million, one hundred thirteen thousand, five hundred seventy-two".