212101340 has 24 divisors (see below), whose sum is σ = 485905392. Its totient is φ = 77127680.

The previous prime is 212101319. The next prime is 212101361. The reversal of 212101340 is 43101212.

212101340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212101319) and next prime (212101361).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481829 + ... + 482268.

It is an arithmetic number, because the mean of its divisors is an integer number (20246058).

Almost surely, 2^212101340 is an apocalyptic number.

212101340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101340 is an abundant number, since it is smaller than the sum of its proper divisors (273804052).

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

212101340 is a wasteful number, since it uses less digits than its factorization.

212101340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964117 (or 964115 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 212101340 is about 14563.6993926681. The cubic root of 212101340 is about 596.3681905855.

Adding to 212101340 its reverse (43101212), we get a palindrome (255202552).

The spelling of 212101340 in words is "two hundred twelve million, one hundred one thousand, three hundred forty".