220221200121212 has 6 divisors (see below), whose sum is σ = 385387100212128. Its totient is φ = 110110600060604.

The previous prime is 220221200121187. The next prime is 220221200121227. The reversal of 220221200121212 is 212121002122022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27527650015148 + ... + 27527650015155.

It is an arithmetic number, because the mean of its divisors is an integer number (64231183368688).

Almost surely, 2^{220221200121212} is an apocalyptic number.

It is an amenable number.

220221200121212 is a deficient number, since it is larger than the sum of its proper divisors (165165900090916).

220221200121212 is a wasteful number, since it uses less digits than its factorization.

220221200121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55055300030307 (or 55055300030305 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 220221200121212 its reverse (212121002122022), we get a palindrome (432342202243234).

The spelling of 220221200121212 in words is "two hundred twenty trillion, two hundred twenty-one billion, two hundred million, one hundred twenty-one thousand, two hundred twelve".