211013313220 has 24 divisors (see below), whose sum is σ = 444543715224. Its totient is φ = 84135657216.

The previous prime is 211013313193. The next prime is 211013313271. The reversal of 211013313220 is 22313310112.

It can be written as a sum of positive squares in 4 ways, for example, as 18076264704 + 192937048516 = 134448^2 + 439246^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16847839 + ... + 16860358.

It is an arithmetic number, because the mean of its divisors is an integer number (18522654801).

Almost surely, 2^211013313220 is an apocalyptic number.

211013313220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211013313220 is an abundant number, since it is smaller than the sum of its proper divisors (233530402004).

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

211013313220 is a wasteful number, since it uses less digits than its factorization.

211013313220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33708519 (or 33708517 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 211013313220 its reverse (22313310112), we get a palindrome (233326623332).

The spelling of 211013313220 in words is "two hundred eleven billion, thirteen million, three hundred thirteen thousand, two hundred twenty".