212881695 has 48 divisors (see below), whose sum is σ = 373847040. Its totient is φ = 103379328.

The previous prime is 212881679. The next prime is 212881699. The reversal of 212881695 is 596188212.

It is a happy number.

It is not a de Polignac number, because 212881695 - 2⁴ = 212881679 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212881699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 199734 + ... + 200796.

It is an arithmetic number, because the mean of its divisors is an integer number (7788480).

Almost surely, 2^212881695 is an apocalyptic number.

212881695 is a deficient number, since it is larger than the sum of its proper divisors (160965345).

212881695 is a wasteful number, since it uses less digits than its factorization.

212881695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176 (or 1163 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 212881695 is about 14590.4658938637. The cubic root of 212881695 is about 597.0986736783.

The spelling of 212881695 in words is "two hundred twelve million, eight hundred eighty-one thousand, six hundred ninety-five".