21043302411 has 16 divisors (see below), whose sum is σ = 29221924608. Its totient is φ = 13457455200.

The previous prime is 21043302409. The next prime is 21043302487. The reversal of 21043302411 is 11420334012.

It is not a de Polignac number, because 21043302411 - 2¹ = 21043302409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21043302611) 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, 1327185 + ... + 1342946.

It is an arithmetic number, because the mean of its divisors is an integer number (1826370288).

Almost surely, 2^21043302411 is an apocalyptic number.

21043302411 is a deficient number, since it is larger than the sum of its proper divisors (8178622197).

21043302411 is a wasteful number, since it uses less digits than its factorization.

21043302411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2670242.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21043302411 its reverse (11420334012), we get a palindrome (32463636423).

The spelling of 21043302411 in words is "twenty-one billion, forty-three million, three hundred two thousand, four hundred eleven".