211122220000 has 240 divisors, whose sum is σ = 532339459344. Its totient is φ = 82368000000.

The previous prime is 211122219961. The next prime is 211122220003. The reversal of 211122220000 is 22221112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122220003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 159819340 + ... + 159820660.

Almost surely, 2^211122220000 is an apocalyptic number.

211122220000 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 211122220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266169729672).

211122220000 is an abundant number, since it is smaller than the sum of its proper divisors (321217239344).

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

211122220000 is a wasteful number, since it uses less digits than its factorization.

211122220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543 (or 1520 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 211122220000 its reverse (22221112), we get a palindrome (211144441112).

The spelling of 211122220000 in words is "two hundred eleven billion, one hundred twenty-two million, two hundred twenty thousand".