21002012332003 has 4 divisors (see below), whose sum is σ = 21569634286960. Its totient is φ = 20434390377048.

The previous prime is 21002012331973. The next prime is 21002012332013. The reversal of 21002012332003 is 30023321020012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21002012332003 - 2¹³ = 21002012323811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002012332013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283810977423 + ... + 283810977496.

It is an arithmetic number, because the mean of its divisors is an integer number (5392408571740).

Almost surely, 2^{21002012332003} is an apocalyptic number.

21002012332003 is a deficient number, since it is larger than the sum of its proper divisors (567621954957).

21002012332003 is an equidigital number, since it uses as much as digits as its factorization.

21002012332003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567621954956.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21002012332003 its reverse (30023321020012), we get a palindrome (51025333352015).

The spelling of 21002012332003 in words is "twenty-one trillion, two billion, twelve million, three hundred thirty-two thousand, three".