21002232003 has 8 divisors (see below), whose sum is σ = 28020257616. Its totient is φ = 13992847200.

The previous prime is 21002231969. The next prime is 21002232091. The reversal of 21002232003 is 30023220012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21002232003 - 2³³ = 12412297411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21002232403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2154528 + ... + 2164253.

It is an arithmetic number, because the mean of its divisors is an integer number (3502532202).

Almost surely, 2^21002232003 is an apocalyptic number.

21002232003 is a deficient number, since it is larger than the sum of its proper divisors (7018025613).

21002232003 is a wasteful number, since it uses less digits than its factorization.

21002232003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320405.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 21002232003 its reverse (30023220012), we get a palindrome (51025452015).

The spelling of 21002232003 in words is "twenty-one billion, two million, two hundred thirty-two thousand, three".