211001122222000 has 320 divisors, whose sum is σ = 562259640758400. Its totient is φ = 75945523200000.

The previous prime is 211001122221973. The next prime is 211001122222001. The reversal of 211001122222000 is 222221100112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (211001122222001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8730225916 + ... + 8730250084.

It is an arithmetic number, because the mean of its divisors is an integer number (1757061377370).

Almost surely, 2^{211001122222000} is an apocalyptic number.

211001122222000 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 211001122222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281129820379200).

211001122222000 is an abundant number, since it is smaller than the sum of its proper divisors (351258518536400).

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

211001122222000 is a wasteful number, since it uses less digits than its factorization.

211001122222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28233 (or 28217 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211001122222000 its reverse (222221100112), we get a palindrome (211223343322112).

The spelling of 211001122222000 in words is "two hundred eleven trillion, one billion, one hundred twenty-two million, two hundred twenty-two thousand".