21002200143 has 16 divisors (see below), whose sum is σ = 28467496416. Its totient is φ = 13769274240.

The previous prime is 21002200139. The next prime is 21002200159. The reversal of 21002200143 is 34100220012.

It is not a de Polignac number, because 21002200143 - 2² = 21002200139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002200123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1500405 + ... + 1514337.

It is an arithmetic number, because the mean of its divisors is an integer number (1779218526).

Almost surely, 2^21002200143 is an apocalyptic number.

21002200143 is a deficient number, since it is larger than the sum of its proper divisors (7465296273).

21002200143 is a wasteful number, since it uses less digits than its factorization.

21002200143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22234.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21002200143 its reverse (34100220012), we get a palindrome (55102420155).

The spelling of 21002200143 in words is "twenty-one billion, two million, two hundred thousand, one hundred forty-three".