21041046321 has 16 divisors (see below), whose sum is σ = 28165729536. Its totient is φ = 13971906576.

The previous prime is 21041046317. The next prime is 21041046331. The reversal of 21041046321 is 12364014012.

It is not a de Polignac number, because 21041046321 - 2² = 21041046317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21041046291 and 21041046300.

It is not an unprimeable number, because it can be changed into a prime (21041046331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3089506 + ... + 3096308.

It is an arithmetic number, because the mean of its divisors is an integer number (1760358096).

Almost surely, 2^21041046321 is an apocalyptic number.

It is an amenable number.

21041046321 is a deficient number, since it is larger than the sum of its proper divisors (7124683215).

21041046321 is a wasteful number, since it uses less digits than its factorization.

21041046321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10732.

The product of its (nonzero) digits is 1152, while the sum is 24.

The spelling of 21041046321 in words is "twenty-one billion, forty-one million, forty-six thousand, three hundred twenty-one".