212113443 has 8 divisors (see below), whose sum is σ = 283557888. Its totient is φ = 141038984.

The previous prime is 212113441. The next prime is 212113457. The reversal of 212113443 is 344311212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212113443 - 2¹ = 212113441 is a prime.

It is a super-2 number, since 2×212113443² = 89984225402628498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212113441) 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, 91155 + ... + 93452.

It is an arithmetic number, because the mean of its divisors is an integer number (35444736).

Almost surely, 2^212113443 is an apocalyptic number.

212113443 is a deficient number, since it is larger than the sum of its proper divisors (71444445).

212113443 is a wasteful number, since it uses less digits than its factorization.

212113443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184993.

The product of its digits is 576, while the sum is 21.

The square root of 212113443 is about 14564.1149061658. The cubic root of 212113443 is about 596.3795337591.

Adding to 212113443 its reverse (344311212), we get a palindrome (556424655).

The spelling of 212113443 in words is "two hundred twelve million, one hundred thirteen thousand, four hundred forty-three".