212320816 has 10 divisors (see below), whose sum is σ = 411371612. Its totient is φ = 106160400.

The previous prime is 212320813. The next prime is 212320831. The reversal of 212320816 is 618023212.

It is not an unprimeable number, because it can be changed into a prime (212320813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6635010 + ... + 6635041.

Almost surely, 2^212320816 is an apocalyptic number.

It is an amenable number.

212320816 is a deficient number, since it is larger than the sum of its proper divisors (199050796).

212320816 is a wasteful number, since it uses less digits than its factorization.

212320816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13270059 (or 13270053 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 212320816 is about 14571.2324804733. The cubic root of 212320816 is about 596.5738208823.

The spelling of 212320816 in words is "two hundred twelve million, three hundred twenty thousand, eight hundred sixteen".