212220246 has 16 divisors (see below), whose sum is σ = 485074944. Its totient is φ = 60634344.

The previous prime is 212220191. The next prime is 212220247. The reversal of 212220246 is 642022212.

212220246 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220247) 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, 2526390 + ... + 2526473.

It is an arithmetic number, because the mean of its divisors is an integer number (30317184).

Almost surely, 2^212220246 is an apocalyptic number.

212220246 is an abundant number, since it is smaller than the sum of its proper divisors (272854698).

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

212220246 is a wasteful number, since it uses less digits than its factorization.

212220246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052875.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 212220246 is about 14567.7810939072. The cubic root of 212220246 is about 596.4796129665.

Adding to 212220246 its reverse (642022212), we get a palindrome (854242458).

The spelling of 212220246 in words is "two hundred twelve million, two hundred twenty thousand, two hundred forty-six".