212005281983 has 16 divisors (see below), whose sum is σ = 235238277120. Its totient is φ = 189460101600.

The previous prime is 212005281973. The next prime is 212005281991. The reversal of 212005281983 is 389182500212.

It is not a de Polignac number, because 212005281983 - 2³⁰ = 210931540159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212005281983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212005281973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543863 + ... + 848408.

It is an arithmetic number, because the mean of its divisors is an integer number (14702392320).

Almost surely, 2^212005281983 is an apocalyptic number.

212005281983 is a deficient number, since it is larger than the sum of its proper divisors (23232995137).

212005281983 is a wasteful number, since it uses less digits than its factorization.

212005281983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392518.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 212005281983 in words is "two hundred twelve billion, five million, two hundred eighty-one thousand, nine hundred eighty-three".