202221212 has 6 divisors (see below), whose sum is σ = 353887128. Its totient is φ = 101110604.

The previous prime is 202221203. The next prime is 202221233. The reversal of 202221212 is 212122202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25277648 + ... + 25277655.

It is an arithmetic number, because the mean of its divisors is an integer number (58981188).

Almost surely, 2^202221212 is an apocalyptic number.

It is an amenable number.

202221212 is a deficient number, since it is larger than the sum of its proper divisors (151665916).

202221212 is a wasteful number, since it uses less digits than its factorization.

202221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50555307 (or 50555305 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 202221212 is about 14220.4504851288. The cubic root of 202221212 is about 586.9605364552.

Adding to 202221212 its reverse (212122202), we get a palindrome (414343414).

The spelling of 202221212 in words is "two hundred two million, two hundred twenty-one thousand, two hundred twelve".