212103420144 has 160 divisors (see below), whose sum is σ = 690815070720. Its totient is φ = 54472704000.

The previous prime is 212103420127. The next prime is 212103420223. The reversal of 212103420144 is 441024301212.

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 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, 6544 + ... + 651344.

It is an arithmetic number, because the mean of its divisors is an integer number (4317594192).

Almost surely, 2^212103420144 is an apocalyptic number.

212103420144 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 212103420144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345407535360).

212103420144 is an abundant number, since it is smaller than the sum of its proper divisors (478711650576).

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

212103420144 is a wasteful number, since it uses less digits than its factorization.

212103420144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644919 (or 644913 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 212103420144 its reverse (441024301212), we get a palindrome (653127721356).

The spelling of 212103420144 in words is "two hundred twelve billion, one hundred three million, four hundred twenty thousand, one hundred forty-four".