212102241 has 16 divisors (see below), whose sum is σ = 312790464. Its totient is φ = 126995904.

The previous prime is 212102221. The next prime is 212102257. The reversal of 212102241 is 142201212.

It is not a de Polignac number, because 212102241 - 2¹¹ = 212100193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212102241.

It is not an unprimeable number, because it can be changed into a prime (212102221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72051 + ... + 74936.

It is an arithmetic number, because the mean of its divisors is an integer number (19549404).

Almost surely, 2^212102241 is an apocalyptic number.

It is an amenable number.

212102241 is a deficient number, since it is larger than the sum of its proper divisors (100688223).

212102241 is a wasteful number, since it uses less digits than its factorization.

212102241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147040.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 212102241 is about 14563.7303257098. The cubic root of 212102241 is about 596.3690350356.

Adding to 212102241 its reverse (142201212), we get a palindrome (354303453).

The spelling of 212102241 in words is "two hundred twelve million, one hundred two thousand, two hundred forty-one".