21403214334 has 20 divisors (see below), whose sum is σ = 47959054704. Its totient is φ = 7134404724.

The previous prime is 21403214311. The next prime is 21403214347. The reversal of 21403214334 is 43341230412.

21403214334 is a `hidden beast` number, since 2 + 1 + 4 + 0 + 321 + 4 + 334 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21403214298 and 21403214307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 66059142 + ... + 66059465.

Almost surely, 2^21403214334 is an apocalyptic number.

21403214334 is an abundant number, since it is smaller than the sum of its proper divisors (26555840370).

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

21403214334 is a wasteful number, since it uses less digits than its factorization.

21403214334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132118621 (or 132118612 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21403214334 its reverse (43341230412), we get a palindrome (64744444746).

The spelling of 21403214334 in words is "twenty-one billion, four hundred three million, two hundred fourteen thousand, three hundred thirty-four".