220001100121212 has 24 divisors (see below), whose sum is σ = 514030536163200. Its totient is φ = 73234466343216.

The previous prime is 220001100121211. The next prime is 220001100121223. The reversal of 220001100121212 is 212121001100022.

It is a junction number, because it is equal to n+sod(n) for n = 220001100121191 and 220001100121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220001100121211) 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, 12404202912 + ... + 12404220647.

It is an arithmetic number, because the mean of its divisors is an integer number (21417939006800).

Almost surely, 2^{220001100121212} is an apocalyptic number.

It is an amenable number.

220001100121212 is an abundant number, since it is smaller than the sum of its proper divisors (294029436041988).

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

220001100121212 is a wasteful number, since it uses less digits than its factorization.

220001100121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24808424305 (or 24808424303 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220001100121212 its reverse (212121001100022), we get a palindrome (432122101221234).

The spelling of 220001100121212 in words is "two hundred twenty trillion, one billion, one hundred million, one hundred twenty-one thousand, two hundred twelve".