21002132120003 has 8 divisors (see below), whose sum is σ = 22482211012800. Its totient is φ = 19559523579048.

The previous prime is 21002132119933. The next prime is 21002132120023. The reversal of 21002132120003 is 30002123120012.

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

It is a cyclic number.

It is not a de Polignac number, because 21002132120003 - 2²⁴ = 21002115342787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002132120023) 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, 9367586801 + ... + 9367589042.

It is an arithmetic number, because the mean of its divisors is an integer number (2810276376600).

Almost surely, 2^{21002132120003} is an apocalyptic number.

21002132120003 is a deficient number, since it is larger than the sum of its proper divisors (1480078892797).

21002132120003 is a wasteful number, since it uses less digits than its factorization.

21002132120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18735175921.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21002132120003 its reverse (30002123120012), we get a palindrome (51004255240015).

The spelling of 21002132120003 in words is "twenty-one trillion, two billion, one hundred thirty-two million, one hundred twenty thousand, three".