21004131411002 has 16 divisors (see below), whose sum is σ = 31629149424360. Its totient is φ = 10461082533888.

The previous prime is 21004131410989. The next prime is 21004131411031. The reversal of 21004131411002 is 20011413140012.

It can be written as a sum of positive squares in 4 ways, for example, as 19228146070081 + 1775985340921 = 4384991^2 + 1332661^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60229874 + ... + 60577602.

Almost surely, 2^{21004131411002} is an apocalyptic number.

21004131411002 is a deficient number, since it is larger than the sum of its proper divisors (10625018013358).

21004131411002 is a wasteful number, since it uses less digits than its factorization.

21004131411002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465505.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21004131411002 its reverse (20011413140012), we get a palindrome (41015544551014).

The spelling of 21004131411002 in words is "twenty-one trillion, four billion, one hundred thirty-one million, four hundred eleven thousand, two".