212134515 has 16 divisors (see below), whose sum is σ = 344980896. Its totient is φ = 111283200.

The previous prime is 212134493. The next prime is 212134583. The reversal of 212134515 is 515431212.

It is a happy number.

It is not a de Polignac number, because 212134515 - 2¹¹ = 212132467 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115006 + ... + 116835.

It is an arithmetic number, because the mean of its divisors is an integer number (21561306).

Almost surely, 2^212134515 is an apocalyptic number.

212134515 is a deficient number, since it is larger than the sum of its proper divisors (132846381).

212134515 is a wasteful number, since it uses less digits than its factorization.

212134515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231910.

The product of its digits is 1200, while the sum is 24.

The square root of 212134515 is about 14564.8383101221. The cubic root of 212134515 is about 596.3992818292.

Adding to 212134515 its reverse (515431212), we get a palindrome (727565727).

The spelling of 212134515 in words is "two hundred twelve million, one hundred thirty-four thousand, five hundred fifteen".