211422440112 has 160 divisors (see below), whose sum is σ = 619859493120. Its totient is φ = 61558133760.

The previous prime is 211422440107. The next prime is 211422440123. The reversal of 211422440112 is 211044224112.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10743562 + ... + 10763222.

It is an arithmetic number, because the mean of its divisors is an integer number (3874121832).

Almost surely, 2^211422440112 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 211422440112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309929746560).

211422440112 is an abundant number, since it is smaller than the sum of its proper divisors (408437053008).

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

211422440112 is a wasteful number, since it uses less digits than its factorization.

211422440112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20611 (or 20605 counting only the distinct ones).

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

Adding to 211422440112 its reverse (211044224112), we get a palindrome (422466664224).

The spelling of 211422440112 in words is "two hundred eleven billion, four hundred twenty-two million, four hundred forty thousand, one hundred twelve".