212001113 has 8 divisors (see below), whose sum is σ = 216218376. Its totient is φ = 207792000.

The previous prime is 212001109. The next prime is 212001149. The reversal of 212001113 is 311100212.

It can be written as a sum of positive squares in 4 ways, for example, as 30614089 + 181387024 = 5533^2 + 13468^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 212001113 - 2² = 212001109 is a prime.

212001113 is a modest number, since divided by 1113 gives 212 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 212001094 and 212001103.

It is not an unprimeable number, because it can be changed into a prime (212001313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94343 + ... + 96563.

It is an arithmetic number, because the mean of its divisors is an integer number (27027297).

Almost surely, 2^212001113 is an apocalyptic number.

It is an amenable number.

212001113 is a deficient number, since it is larger than the sum of its proper divisors (4217263).

212001113 is a wasteful number, since it uses less digits than its factorization.

212001113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 212001113 is about 14560.2579990878. The cubic root of 212001113 is about 596.2742392506.

Adding to 212001113 its reverse (311100212), we get a palindrome (523101325).

Subtracting 212001113 from its reverse (311100212), we obtain a palindrome (99099099).

The spelling of 212001113 in words is "two hundred twelve million, one thousand, one hundred thirteen".