21014709108211 has 32 divisors (see below), whose sum is σ = 25886055904128. Its totient is φ = 16613015224320.

The previous prime is 21014709108191. The next prime is 21014709108229. The reversal of 21014709108211 is 11280190741012.

It is a cyclic number.

It is not a de Polignac number, because 21014709108211 - 2⁵ = 21014709108179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21014709108271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 578055411 + ... + 578091763.

It is an arithmetic number, because the mean of its divisors is an integer number (808939247004).

Almost surely, 2^{21014709108211} is an apocalyptic number.

21014709108211 is a deficient number, since it is larger than the sum of its proper divisors (4871346795917).

21014709108211 is a wasteful number, since it uses less digits than its factorization.

21014709108211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41551.

The product of its (nonzero) digits is 8064, while the sum is 37.

Adding to 21014709108211 its reverse (11280190741012), we get a palindrome (32294899849223).

The spelling of 21014709108211 in words is "twenty-one trillion, fourteen billion, seven hundred nine million, one hundred eight thousand, two hundred eleven".