21014144003 has 16 divisors (see below), whose sum is σ = 21921715200. Its totient is φ = 20121847200.

The previous prime is 21014143951. The next prime is 21014144029. The reversal of 21014144003 is 30044141012.

It is a cyclic number.

It is not a de Polignac number, because 21014144003 - 2¹⁶ = 21014078467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21014144033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1409876 + ... + 1424702.

It is an arithmetic number, because the mean of its divisors is an integer number (1370107200).

Almost surely, 2^21014144003 is an apocalyptic number.

21014144003 is a deficient number, since it is larger than the sum of its proper divisors (907571197).

21014144003 is a wasteful number, since it uses less digits than its factorization.

21014144003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15338.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21014144003 its reverse (30044141012), we get a palindrome (51058285015).

The spelling of 21014144003 in words is "twenty-one billion, fourteen million, one hundred forty-four thousand, three".