212928039571 has 4 divisors (see below), whose sum is σ = 229307119552. Its totient is φ = 196548959592.

The previous prime is 212928039529. The next prime is 212928039637. The reversal of 212928039571 is 175930829212.

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 212928039571 - 2⁹ = 212928039059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212928039871) 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, 8189539971 + ... + 8189539996.

It is an arithmetic number, because the mean of its divisors is an integer number (57326779888).

Almost surely, 2^212928039571 is an apocalyptic number.

212928039571 is a deficient number, since it is larger than the sum of its proper divisors (16379079981).

212928039571 is a wasteful number, since it uses less digits than its factorization.

212928039571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16379079980.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 212928039571 in words is "two hundred twelve billion, nine hundred twenty-eight million, thirty-nine thousand, five hundred seventy-one".