211020220212 has 24 divisors (see below), whose sum is σ = 498613180800. Its totient is φ = 69449692416.

The previous prime is 211020220189. The next prime is 211020220231. The reversal of 211020220212 is 212022020112.

It is a junction number, because it is equal to n+sod(n) for n = 211020220191 and 211020220200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111296637 + ... + 111298532.

It is an arithmetic number, because the mean of its divisors is an integer number (20775549200).

Almost surely, 2^211020220212 is an apocalyptic number.

It is an amenable number.

211020220212 is an abundant number, since it is smaller than the sum of its proper divisors (287592960588).

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

211020220212 is a wasteful number, since it uses less digits than its factorization.

211020220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222595255 (or 222595253 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 211020220212 its reverse (212022020112), we get a palindrome (423042240324).

The spelling of 211020220212 in words is "two hundred eleven billion, twenty million, two hundred twenty thousand, two hundred twelve".