212110121212 has 24 divisors (see below), whose sum is σ = 405877070592. Its totient is φ = 96189985200.

The previous prime is 212110121203. The next prime is 212110121291. The reversal of 212110121212 is 212121011212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5573478 + ... + 5611405.

It is an arithmetic number, because the mean of its divisors is an integer number (16911544608).

Almost surely, 2^212110121212 is an apocalyptic number.

212110121212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212110121212 is a deficient number, since it is larger than the sum of its proper divisors (193766949380).

212110121212 is a wasteful number, since it uses less digits than its factorization.

212110121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11185329 (or 11185327 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212110121212 its reverse (212121011212), we get a palindrome (424231132424).

Subtracting 212110121212 from its reverse (212121011212), we obtain a square (10890000 = 3300²).

The spelling of 212110121212 in words is "two hundred twelve billion, one hundred ten million, one hundred twenty-one thousand, two hundred twelve".