211020312230 has 64 divisors (see below), whose sum is σ = 468356370048. Its totient is φ = 66660848640.

The previous prime is 211020312211. The next prime is 211020312259. The reversal of 211020312230 is 32213020112.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211020312199 and 211020312208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277994 + ... + 706626.

It is an arithmetic number, because the mean of its divisors is an integer number (7318068282).

Almost surely, 2^211020312230 is an apocalyptic number.

211020312230 is an abundant number, since it is smaller than the sum of its proper divisors (257336057818).

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

211020312230 is a wasteful number, since it uses less digits than its factorization.

211020312230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429201.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 211020312230 its reverse (32213020112), we get a palindrome (243233332342).

The spelling of 211020312230 in words is "two hundred eleven billion, twenty million, three hundred twelve thousand, two hundred thirty".