212420113 has 4 divisors (see below), whose sum is σ = 212482368. Its totient is φ = 212357860.

The previous prime is 212420081. The next prime is 212420141. The reversal of 212420113 is 311024212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212420113 - 2⁵ = 212420081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212420183) 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 3 ways as a sum of consecutive naturals, for example, 25693 + ... + 32938.

It is an arithmetic number, because the mean of its divisors is an integer number (53120592).

Almost surely, 2^212420113 is an apocalyptic number.

It is an amenable number.

212420113 is a deficient number, since it is larger than the sum of its proper divisors (62255).

212420113 is an equidigital number, since it uses as much as digits as its factorization.

212420113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62254.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 212420113 is about 14574.6393780429. The cubic root of 212420113 is about 596.6668071464. Note that the first 3 decimals are identical.

Adding to 212420113 its reverse (311024212), we get a palindrome (523444325).

The spelling of 212420113 in words is "two hundred twelve million, four hundred twenty thousand, one hundred thirteen".