211300111220 has 48 divisors (see below), whose sum is σ = 499684502016. Its totient is φ = 74357808000.

The previous prime is 211300111193. The next prime is 211300111247. The reversal of 211300111220 is 22111003112.

It is an interprime number because it is at equal distance from previous prime (211300111193) and next prime (211300111247).

It is a junction number, because it is equal to n+sod(n) for n = 211300111195 and 211300111204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15484391 + ... + 15498030.

It is an arithmetic number, because the mean of its divisors is an integer number (10410093792).

Almost surely, 2^211300111220 is an apocalyptic number.

211300111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211300111220 is an abundant number, since it is smaller than the sum of its proper divisors (288384390796).

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

211300111220 is a wasteful number, since it uses less digits than its factorization.

211300111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30982472 (or 30982470 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 211300111220 its reverse (22111003112), we get a palindrome (233411114332).

The spelling of 211300111220 in words is "two hundred eleven billion, three hundred million, one hundred eleven thousand, two hundred twenty".