212212102104 has 48 divisors (see below), whose sum is σ = 578598462000. Its totient is φ = 70262616384.

The previous prime is 212212102099. The next prime is 212212102121. The reversal of 212212102104 is 401201212212.

212212102104 is a `hidden beast` number, since 21 + 221 + 210 + 210 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9879844 + ... + 9901299.

It is an arithmetic number, because the mean of its divisors is an integer number (12054134625).

Almost surely, 2^212212102104 is an apocalyptic number.

212212102104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212212102104 is an abundant number, since it is smaller than the sum of its proper divisors (366386359896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212212102104 is a wasteful number, since it uses less digits than its factorization.

212212102104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19781304 (or 19781297 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212212102104 its reverse (401201212212), we get a palindrome (613413314316).

The spelling of 212212102104 in words is "two hundred twelve billion, two hundred twelve million, one hundred two thousand, one hundred four".