211212104415 has 64 divisors (see below), whose sum is σ = 378504107520. Its totient is φ = 99897960960.

The previous prime is 211212104399. The next prime is 211212104417. The reversal of 211212104415 is 514401212112.

It is not a de Polignac number, because 211212104415 - 2⁴ = 211212104399 is a prime.

It is a super-2 number, since 2×211212104415² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211212104417) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 305016 + ... + 717954.

It is an arithmetic number, because the mean of its divisors is an integer number (5914126680).

Almost surely, 2^211212104415 is an apocalyptic number.

211212104415 is a deficient number, since it is larger than the sum of its proper divisors (167292003105).

211212104415 is a wasteful number, since it uses less digits than its factorization.

211212104415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413064.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 211212104415 its reverse (514401212112), we get a palindrome (725613316527).

The spelling of 211212104415 in words is "two hundred eleven billion, two hundred twelve million, one hundred four thousand, four hundred fifteen".