211212983 has 8 divisors (see below), whose sum is σ = 217539360. Its totient is φ = 204919200.

The previous prime is 211212973. The next prime is 211213007. The reversal of 211212983 is 389212112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211212983 - 2⁶ = 211212919 is a prime.

It is a super-2 number, since 2×211212983² = 89221848375516578, which contains 22 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 (211212943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5333 + ... + 21233.

It is an arithmetic number, because the mean of its divisors is an integer number (27192420).

Almost surely, 2^211212983 is an apocalyptic number.

211212983 is a deficient number, since it is larger than the sum of its proper divisors (6326377).

211212983 is a wasteful number, since it uses less digits than its factorization.

211212983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16297.

The product of its digits is 1728, while the sum is 29.

The square root of 211212983 is about 14533.1683744461. The cubic root of 211212983 is about 595.5344236856.

The spelling of 211212983 in words is "two hundred eleven million, two hundred twelve thousand, nine hundred eighty-three".