211201012220 has 48 divisors (see below), whose sum is σ = 484497417600. Its totient is φ = 76696384320.

The previous prime is 211201012199. The next prime is 211201012229. The reversal of 211201012220 is 22210102112.

It is a junction number, because it is equal to n+sod(n) for n = 211201012195 and 211201012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211201012229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486950 + ... + 812109.

It is an arithmetic number, because the mean of its divisors is an integer number (10093696200).

Almost surely, 2^211201012220 is an apocalyptic number.

211201012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211201012220 is an abundant number, since it is smaller than the sum of its proper divisors (273296405380).

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

211201012220 is a wasteful number, since it uses less digits than its factorization.

211201012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299818 (or 1299816 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211201012220 its reverse (22210102112), we get a palindrome (233411114332).

The spelling of 211201012220 in words is "two hundred eleven billion, two hundred one million, twelve thousand, two hundred twenty".