212115143 has 8 divisors (see below), whose sum is σ = 213486000. Its totient is φ = 210748608.

The previous prime is 212115139. The next prime is 212115227. The reversal of 212115143 is 341511212.

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 212115143 - 2² = 212115139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212115133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201683 + ... + 202731.

It is an arithmetic number, because the mean of its divisors is an integer number (26685750).

Almost surely, 2^212115143 is an apocalyptic number.

212115143 is a deficient number, since it is larger than the sum of its proper divisors (1370857).

212115143 is a wasteful number, since it uses less digits than its factorization.

212115143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161.

The product of its digits is 240, while the sum is 20.

The square root of 212115143 is about 14564.1732686754. The cubic root of 212115143 is about 596.3811269985.

Adding to 212115143 its reverse (341511212), we get a palindrome (553626355).

The spelling of 212115143 in words is "two hundred twelve million, one hundred fifteen thousand, one hundred forty-three".