340221421210312 has 16 divisors (see below), whose sum is σ = 637922844616860. Its totient is φ = 170108662645824.

The previous prime is 340221421210291. The next prime is 340221421210327. The reversal of 340221421210312 is 213012124122043.

It can be written as a sum of positive squares in 2 ways, for example, as 335913164708356 + 4308256501956 = 18327934^2 + 2075634^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255288763 + ... + 256617994.

Almost surely, 2^{340221421210312} is an apocalyptic number.

It is an amenable number.

340221421210312 is a deficient number, since it is larger than the sum of its proper divisors (297701423406548).

340221421210312 is a wasteful number, since it uses less digits than its factorization.

340221421210312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511989840 (or 511989836 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 340221421210312 its reverse (213012124122043), we get a palindrome (553233545332355).

The spelling of 340221421210312 in words is "three hundred forty trillion, two hundred twenty-one billion, four hundred twenty-one million, two hundred ten thousand, three hundred twelve".