212212143 has 96 divisors (see below), whose sum is σ = 387459072. Its totient is φ = 114307200.

The previous prime is 212212141. The next prime is 212212151. The reversal of 212212143 is 341212212.

It is a happy number.

It is not a de Polignac number, because 212212143 - 2¹ = 212212141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212141) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1077121 + ... + 1077317.

It is an arithmetic number, because the mean of its divisors is an integer number (4036032).

Almost surely, 2^212212143 is an apocalyptic number.

212212143 is a deficient number, since it is larger than the sum of its proper divisors (175246929).

212212143 is a wasteful number, since it uses less digits than its factorization.

212212143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 255 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 212212143 is about 14567.5029775181. The cubic root of 212212143 is about 596.4720212689.

Adding to 212212143 its reverse (341212212), we get a palindrome (553424355).

The spelling of 212212143 in words is "two hundred twelve million, two hundred twelve thousand, one hundred forty-three".