212369971 has 16 divisors (see below), whose sum is σ = 242300160. Its totient is φ = 184249120.

The previous prime is 212369959. The next prime is 212369977. The reversal of 212369971 is 179963212.

It is a de Polignac number, because none of the positive numbers 2^k-212369971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212369977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172185 + ... + 173413.

It is an arithmetic number, because the mean of its divisors is an integer number (15143760).

Almost surely, 2^212369971 is an apocalyptic number.

212369971 is a deficient number, since it is larger than the sum of its proper divisors (29930189).

212369971 is a wasteful number, since it uses less digits than its factorization.

212369971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946.

The product of its digits is 40824, while the sum is 40.

The square root of 212369971 is about 14572.9190967356. The cubic root of 212369971 is about 596.6198555010.

The spelling of 212369971 in words is "two hundred twelve million, three hundred sixty-nine thousand, nine hundred seventy-one".