211322042220 has 24 divisors (see below), whose sum is σ = 591701718384. Its totient is φ = 56352544576.

The previous prime is 211322042207. The next prime is 211322042221. The reversal of 211322042220 is 22240223112.

It is not an unprimeable number, because it can be changed into a prime (211322042221) 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, 1761016959 + ... + 1761017078.

It is an arithmetic number, because the mean of its divisors is an integer number (24654238266).

Almost surely, 2^211322042220 is an apocalyptic number.

211322042220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211322042220 is an abundant number, since it is smaller than the sum of its proper divisors (380379676164).

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

211322042220 is a wasteful number, since it uses less digits than its factorization.

211322042220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522034049 (or 3522034047 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 211322042220 its reverse (22240223112), we get a palindrome (233562265332).

The spelling of 211322042220 in words is "two hundred eleven billion, three hundred twenty-two million, forty-two thousand, two hundred twenty".