220100212 has 12 divisors (see below), whose sum is σ = 388709860. Its totient is φ = 109040256.

The previous prime is 220100171. The next prime is 220100291. The reversal of 220100212 is 212001022.

It can be written as a sum of positive squares in 2 ways, for example, as 74028816 + 146071396 = 8604^2 + 12086^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251973 + ... + 252844.

Almost surely, 2^220100212 is an apocalyptic number.

It is an amenable number.

220100212 is a deficient number, since it is larger than the sum of its proper divisors (168609648).

220100212 is a wasteful number, since it uses less digits than its factorization.

220100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504930 (or 504928 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 220100212 is about 14835.7747354157. The cubic root of 220100212 is about 603.7727205049.

Adding to 220100212 its reverse (212001022), we get a palindrome (432101234).

The spelling of 220100212 in words is "two hundred twenty million, one hundred thousand, two hundred twelve".