211222300000 has 144 divisors (see below), whose sum is σ = 526370685120. Its totient is φ = 83416320000.

The previous prime is 211222299991. The next prime is 211222300027. The reversal of 211222300000 is 3222112.

It is a super-2 number, since 2×211222300000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7886632 + ... + 7913368.

It is an arithmetic number, because the mean of its divisors is an integer number (3655351980).

Almost surely, 2^211222300000 is an apocalyptic number.

211222300000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211222300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263185342560).

211222300000 is an abundant number, since it is smaller than the sum of its proper divisors (315148385120).

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

211222300000 is an frugal number, since it uses more digits than its factorization.

211222300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26851 (or 26823 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 211222300000 its reverse (3222112), we get a palindrome (211225522112).

The spelling of 211222300000 in words is "two hundred eleven billion, two hundred twenty-two million, three hundred thousand".