212214242220 has 96 divisors (see below), whose sum is σ = 610524927936. Its totient is φ = 55037030400.

The previous prime is 212214242161. The next prime is 212214242263. The reversal of 212214242220 is 22242412212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5399440 + ... + 5438600.

It is an arithmetic number, because the mean of its divisors is an integer number (6359634666).

Almost surely, 2^212214242220 is an apocalyptic number.

212214242220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212214242220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305262463968).

212214242220 is an abundant number, since it is smaller than the sum of its proper divisors (398310685716).

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

212214242220 is a wasteful number, since it uses less digits than its factorization.

212214242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41651 (or 41649 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 212214242220 its reverse (22242412212), we get a palindrome (234456654432).

The spelling of 212214242220 in words is "two hundred twelve billion, two hundred fourteen million, two hundred forty-two thousand, two hundred twenty".