21234164030 has 32 divisors (see below), whose sum is σ = 38543752800. Its totient is φ = 8422204032.

The previous prime is 21234164027. The next prime is 21234164033. The reversal of 21234164030 is 3046143212.

It is an interprime number because it is at equal distance from previous prime (21234164027) and next prime (21234164033).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21234164033) 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 15 ways as a sum of consecutive naturals, for example, 1176716 + ... + 1194624.

It is an arithmetic number, because the mean of its divisors is an integer number (1204492275).

Almost surely, 2^21234164030 is an apocalyptic number.

21234164030 is a deficient number, since it is larger than the sum of its proper divisors (17309588770).

21234164030 is a wasteful number, since it uses less digits than its factorization.

21234164030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18908.

The product of its (nonzero) digits is 3456, while the sum is 26.

The spelling of 21234164030 in words is "twenty-one billion, two hundred thirty-four million, one hundred sixty-four thousand, thirty".