212013671 has 4 divisors (see below), whose sum is σ = 212163672. Its totient is φ = 211863672.

The previous prime is 212013667. The next prime is 212013677. The reversal of 212013671 is 176310212.

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

It is a cyclic number.

It is not a de Polignac number, because 212013671 - 2² = 212013667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212013677) 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, 72860 + ... + 75713.

It is an arithmetic number, because the mean of its divisors is an integer number (53040918).

Almost surely, 2^212013671 is an apocalyptic number.

212013671 is a deficient number, since it is larger than the sum of its proper divisors (150001).

212013671 is a wasteful number, since it uses less digits than its factorization.

212013671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150000.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 212013671 is about 14560.6892350603. The cubic root of 212013671 is about 596.2860125600.

Adding to 212013671 its reverse (176310212), we get a palindrome (388323883).

The spelling of 212013671 in words is "two hundred twelve million, thirteen thousand, six hundred seventy-one".