212444442104240 has 160 divisors (see below), whose sum is σ = 523221749539776. Its totient is φ = 80126852382720.

The previous prime is 212444442104227. The next prime is 212444442104273. The reversal of 212444442104240 is 42401244444212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212444442104194 and 212444442104203.

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, 2527364 + ... + 20767196.

Almost surely, 2^{212444442104240} is an apocalyptic number.

212444442104240 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 212444442104240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261610874769888).

212444442104240 is an abundant number, since it is smaller than the sum of its proper divisors (310777307435536).

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

212444442104240 is a wasteful number, since it uses less digits than its factorization.

212444442104240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18240007 (or 18240001 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 38.

Adding to 212444442104240 its reverse (42401244444212), we get a palindrome (254845686548452).

The spelling of 212444442104240 in words is "two hundred twelve trillion, four hundred forty-four billion, four hundred forty-two million, one hundred four thousand, two hundred forty".