21400200334 has 16 divisors (see below), whose sum is σ = 32557498848. Its totient is φ = 10548559872.

The previous prime is 21400200313. The next prime is 21400200343. The reversal of 21400200334 is 43300200412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164754 + ... + 264469.

It is an arithmetic number, because the mean of its divisors is an integer number (2034843678).

Almost surely, 2^21400200334 is an apocalyptic number.

21400200334 is a deficient number, since it is larger than the sum of its proper divisors (11157298514).

21400200334 is a wasteful number, since it uses less digits than its factorization.

21400200334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429579.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21400200334 its reverse (43300200412), we get a palindrome (64700400746).

The spelling of 21400200334 in words is "twenty-one billion, four hundred million, two hundred thousand, three hundred thirty-four".