212134130340 has 96 divisors (see below), whose sum is σ = 648063230976. Its totient is φ = 51419322240.

The previous prime is 212134130303. The next prime is 212134130359. The reversal of 212134130340 is 43031431212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212134130340.

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, 5950609 + ... + 5986151.

It is an arithmetic number, because the mean of its divisors is an integer number (6750658656).

Almost surely, 2^212134130340 is an apocalyptic number.

212134130340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212134130340 is an abundant number, since it is smaller than the sum of its proper divisors (435929100636).

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

212134130340 is a wasteful number, since it uses less digits than its factorization.

212134130340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44609 (or 44607 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 212134130340 its reverse (43031431212), we get a palindrome (255165561552).

The spelling of 212134130340 in words is "two hundred twelve billion, one hundred thirty-four million, one hundred thirty thousand, three hundred forty".