21134300421434 has 32 divisors (see below), whose sum is σ = 32722491648000. Its totient is φ = 10231244255232.

The previous prime is 21134300421427. The next prime is 21134300421461. The reversal of 21134300421434 is 43412400343112.

It is a self number, because there is not a number n which added to its sum of digits gives 21134300421434.

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 15 ways as a sum of consecutive naturals, for example, 11753942 + ... + 13432190.

It is an arithmetic number, because the mean of its divisors is an integer number (1022577864000).

Almost surely, 2^{21134300421434} is an apocalyptic number.

21134300421434 is a deficient number, since it is larger than the sum of its proper divisors (11588191226566).

21134300421434 is a wasteful number, since it uses less digits than its factorization.

21134300421434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679574.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21134300421434 its reverse (43412400343112), we get a palindrome (64546700764546).

The spelling of 21134300421434 in words is "twenty-one trillion, one hundred thirty-four billion, three hundred million, four hundred twenty-one thousand, four hundred thirty-four".