21214134346 has 8 divisors (see below), whose sum is σ = 32918484420. Its totient is φ = 10241306208.

The previous prime is 21214134313. The next prime is 21214134373. The reversal of 21214134346 is 64343141212.

It can be written as a sum of positive squares in 2 ways, for example, as 18524571025 + 2689563321 = 136105^2 + 51861^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 182880411 + ... + 182880526.

Almost surely, 2^21214134346 is an apocalyptic number.

21214134346 is a deficient number, since it is larger than the sum of its proper divisors (11704350074).

21214134346 is a wasteful number, since it uses less digits than its factorization.

21214134346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365760968.

The product of its digits is 13824, while the sum is 31.

Adding to 21214134346 its reverse (64343141212), we get a palindrome (85557275558).

The spelling of 21214134346 in words is "twenty-one billion, two hundred fourteen million, one hundred thirty-four thousand, three hundred forty-six".