212071471 has 4 divisors (see below), whose sum is σ = 214756000. Its totient is φ = 209386944.

The previous prime is 212071451. The next prime is 212071493. The reversal of 212071471 is 174170212.

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 212071471 - 2¹³ = 212063279 is a prime.

It is a super-3 number, since 3×212071471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212071411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1342146 + ... + 1342303.

It is an arithmetic number, because the mean of its divisors is an integer number (53689000).

Almost surely, 2^212071471 is an apocalyptic number.

212071471 is a deficient number, since it is larger than the sum of its proper divisors (2684529).

212071471 is an equidigital number, since it uses as much as digits as its factorization.

212071471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684528.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 212071471 is about 14562.6738959574. The cubic root of 212071471 is about 596.3401949150.

The spelling of 212071471 in words is "two hundred twelve million, seventy-one thousand, four hundred seventy-one".