212301220 has 24 divisors (see below), whose sum is σ = 449241408. Its totient is φ = 84271200.

The previous prime is 212301197. The next prime is 212301263. The reversal of 212301220 is 22103212.

It is a self number, because there is not a number n which added to its sum of digits gives 212301220.

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, 37896 + ... + 43135.

It is an arithmetic number, because the mean of its divisors is an integer number (18718392).

Almost surely, 2^212301220 is an apocalyptic number.

212301220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212301220 is an abundant number, since it is smaller than the sum of its proper divisors (236940188).

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

212301220 is a wasteful number, since it uses less digits than its factorization.

212301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81171 (or 81169 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 212301220 is about 14570.5600441438. The cubic root of 212301220 is about 596.5554668642. Note that the first 3 decimals are identical.

Adding to 212301220 its reverse (22103212), we get a palindrome (234404432).

It can be divided in two parts, 212301 and 220, that added together give a square (212521 = 461²).

The spelling of 212301220 in words is "two hundred twelve million, three hundred one thousand, two hundred twenty".