211422201144 has 128 divisors (see below), whose sum is σ = 659179468800. Its totient is φ = 54898093440.

The previous prime is 211422201131. The next prime is 211422201161. The reversal of 211422201144 is 441102224112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6746199 + ... + 6777465.

It is an arithmetic number, because the mean of its divisors is an integer number (5149839600).

Almost surely, 2^211422201144 is an apocalyptic number.

211422201144 is a gapful number since it is divisible by the number (24) 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 211422201144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329589734400).

211422201144 is an abundant number, since it is smaller than the sum of its proper divisors (447757267656).

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

211422201144 is a wasteful number, since it uses less digits than its factorization.

211422201144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34953 (or 34949 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 211422201144 its reverse (441102224112), we get a palindrome (652524425256).

The spelling of 211422201144 in words is "two hundred eleven billion, four hundred twenty-two million, two hundred one thousand, one hundred forty-four".