211222834144 has 96 divisors (see below), whose sum is σ = 479892107520. Its totient is φ = 89643383808.

The previous prime is 211222834099. The next prime is 211222834159. The reversal of 211222834144 is 441438222112.

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, 12850059 + ... + 12866485.

It is an arithmetic number, because the mean of its divisors is an integer number (4998876120).

Almost surely, 2^211222834144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211222834144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239946053760).

211222834144 is an abundant number, since it is smaller than the sum of its proper divisors (268669273376).

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

211222834144 is a wasteful number, since it uses less digits than its factorization.

211222834144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17000 (or 16992 counting only the distinct ones).

The product of its digits is 24576, while the sum is 34.

The spelling of 211222834144 in words is "two hundred eleven billion, two hundred twenty-two million, eight hundred thirty-four thousand, one hundred forty-four".