212217611267212 has 24 divisors (see below), whose sum is σ = 380041477825856. Its totient is φ = 103634642211408.

The previous prime is 212217611267171. The next prime is 212217611267257. The reversal of 212217611267212 is 212762116712212.

It is a super-2 number, since 2×212217611267212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36046398 + ... + 41518405.

Almost surely, 2^{212217611267212} is an apocalyptic number.

It is an amenable number.

212217611267212 is a deficient number, since it is larger than the sum of its proper divisors (167823866558644).

212217611267212 is a wasteful number, since it uses less digits than its factorization.

212217611267212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77580757 (or 77580755 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

Adding to 212217611267212 its reverse (212762116712212), we get a palindrome (424979727979424).

The spelling of 212217611267212 in words is "two hundred twelve trillion, two hundred seventeen billion, six hundred eleven million, two hundred sixty-seven thousand, two hundred twelve".