212002220 has 24 divisors (see below), whose sum is σ = 451306464. Its totient is φ = 83638656.

The previous prime is 212002199. The next prime is 212002229. The reversal of 212002220 is 22200212.

212002220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212002229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71144 + ... + 74063.

It is an arithmetic number, because the mean of its divisors is an integer number (18804436).

Almost surely, 2^212002220 is an apocalyptic number.

212002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212002220 is an abundant number, since it is smaller than the sum of its proper divisors (239304244).

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

212002220 is a wasteful number, since it uses less digits than its factorization.

212002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145289 (or 145287 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 212002220 is about 14560.2960134745. The cubic root of 212002220 is about 596.2752770981.

Adding to 212002220 its reverse (22200212), we get a palindrome (234202432).

The spelling of 212002220 in words is "two hundred twelve million, two thousand, two hundred twenty".