212168223232 has 80 divisors (see below), whose sum is σ = 485007082560. Its totient is φ = 90830757888.

The previous prime is 212168223227. The next prime is 212168223247. The reversal of 212168223232 is 232322861212.

It is a super-3 number, since 3×212168223232³ (a number of 35 digits) contains 333 as substring.

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, 3326619 + ... + 3389797.

It is an arithmetic number, because the mean of its divisors is an integer number (6062588532).

Almost surely, 2^212168223232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212168223232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242503541280).

212168223232 is an abundant number, since it is smaller than the sum of its proper divisors (272838859328).

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

212168223232 is an frugal number, since it uses more digits than its factorization.

212168223232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64141 (or 64125 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The spelling of 212168223232 in words is "two hundred twelve billion, one hundred sixty-eight million, two hundred twenty-three thousand, two hundred thirty-two".