212420340234212 has 24 divisors (see below), whose sum is σ = 405642169289280. Its totient is φ = 96527931334560.

The previous prime is 212420340234211. The next prime is 212420340234251. The reversal of 212420340234212 is 212432043024212.

It is not an unprimeable number, because it can be changed into a prime (212420340234211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669058787 + ... + 669376202.

It is an arithmetic number, because the mean of its divisors is an integer number (16901757053720).

Almost surely, 2^{212420340234212} is an apocalyptic number.

212420340234212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212420340234212 is a deficient number, since it is larger than the sum of its proper divisors (193221829055068).

212420340234212 is a wasteful number, since it uses less digits than its factorization.

212420340234212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338438611 (or 1338438609 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 212420340234212 its reverse (212432043024212), we get a palindrome (424852383258424).

The spelling of 212420340234212 in words is "two hundred twelve trillion, four hundred twenty billion, three hundred forty million, two hundred thirty-four thousand, two hundred twelve".