212210421140140 has 96 divisors (see below), whose sum is σ = 474605971164864. Its totient is φ = 79425441177600.

The previous prime is 212210421140111. The next prime is 212210421140143. The reversal of 212210421140140 is 41041124012212.

It is not an unprimeable number, because it can be changed into a prime (212210421140143) by changing a digit.

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, 1461663232 + ... + 1461808408.

It is an arithmetic number, because the mean of its divisors is an integer number (4943812199634).

Almost surely, 2^{212210421140140} is an apocalyptic number.

212210421140140 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 212210421140140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237302985582432).

212210421140140 is an abundant number, since it is smaller than the sum of its proper divisors (262395550024724).

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

212210421140140 is a wasteful number, since it uses less digits than its factorization.

212210421140140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170227 (or 170225 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 212210421140140 its reverse (41041124012212), we get a palindrome (253251545152352).

The spelling of 212210421140140 in words is "two hundred twelve trillion, two hundred ten billion, four hundred twenty-one million, one hundred forty thousand, one hundred forty".