212115255 has 16 divisors (see below), whose sum is σ = 370237824. Its totient is φ = 102843680.

The previous prime is 212115227. The next prime is 212115283. The reversal of 212115255 is 552511212.

It is an interprime number because it is at equal distance from previous prime (212115227) and next prime (212115283).

It is not a de Polignac number, because 212115255 - 2⁸ = 212114999 is a prime.

It is a congruent number.

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, 642609 + ... + 642938.

It is an arithmetic number, because the mean of its divisors is an integer number (23139864).

Almost surely, 2^212115255 is an apocalyptic number.

212115255 is a deficient number, since it is larger than the sum of its proper divisors (158122569).

212115255 is a wasteful number, since it uses less digits than its factorization.

212115255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285566.

The product of its digits is 1000, while the sum is 24.

The square root of 212115255 is about 14564.1771137267. The cubic root of 212115255 is about 596.3812319646.

Adding to 212115255 its reverse (552511212), we get a palindrome (764626467).

The spelling of 212115255 in words is "two hundred twelve million, one hundred fifteen thousand, two hundred fifty-five".