212140411 has 4 divisors (see below), whose sum is σ = 242446192. Its totient is φ = 181834632.

The previous prime is 212140391. The next prime is 212140421. The reversal of 212140411 is 114041212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-212140411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212140421) 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 3 ways as a sum of consecutive naturals, for example, 15152880 + ... + 15152893.

It is an arithmetic number, because the mean of its divisors is an integer number (60611548).

Almost surely, 2^212140411 is an apocalyptic number.

212140411 is a deficient number, since it is larger than the sum of its proper divisors (30305781).

212140411 is an equidigital number, since it uses as much as digits as its factorization.

212140411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30305780.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 212140411 is about 14565.0407139836. The cubic root of 212140411 is about 596.4048071560.

Adding to 212140411 its reverse (114041212), we get a palindrome (326181623).

The spelling of 212140411 in words is "two hundred twelve million, one hundred forty thousand, four hundred eleven".