21002110210011 has 8 divisors (see below), whose sum is σ = 32003215558144. Its totient is φ = 12001205834280.

The previous prime is 21002110209989. The next prime is 21002110210063. The reversal of 21002110210011 is 11001201120012.

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

It is not a de Polignac number, because 21002110210011 - 2²³ = 21002101821403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002110210091) 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, 500050243075 + ... + 500050243116.

It is an arithmetic number, because the mean of its divisors is an integer number (4000401944768).

Almost surely, 2^{21002110210011} is an apocalyptic number.

21002110210011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21002110210011 is a deficient number, since it is larger than the sum of its proper divisors (11001105348133).

21002110210011 is a wasteful number, since it uses less digits than its factorization.

21002110210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000100486201.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21002110210011 its reverse (11001201120012), we get a palindrome (32003311330023).

The spelling of 21002110210011 in words is "twenty-one trillion, two billion, one hundred ten million, two hundred ten thousand, eleven".