21203301134 has 16 divisors (see below), whose sum is σ = 33195850272. Its totient is φ = 10138242048.

The previous prime is 21203301131. The next prime is 21203301173. The reversal of 21203301134 is 43110330212.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203301131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142622 + ... + 250494.

It is an arithmetic number, because the mean of its divisors is an integer number (2074740642).

Almost surely, 2^21203301134 is an apocalyptic number.

21203301134 is a deficient number, since it is larger than the sum of its proper divisors (11992549138).

21203301134 is a wasteful number, since it uses less digits than its factorization.

21203301134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112171.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21203301134 its reverse (43110330212), we get a palindrome (64313631346).

The spelling of 21203301134 in words is "twenty-one billion, two hundred three million, three hundred one thousand, one hundred thirty-four".