21002122000011 has 4 divisors (see below), whose sum is σ = 28002829333352. Its totient is φ = 14001414666672.

The previous prime is 21002122000007. The next prime is 21002122000019. The reversal of 21002122000011 is 11000022120012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21002122000011 - 2² = 21002122000007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002122000019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3500353666666 + ... + 3500353666671.

It is an arithmetic number, because the mean of its divisors is an integer number (7000707333338).

Almost surely, 2^{21002122000011} is an apocalyptic number.

21002122000011 is a deficient number, since it is larger than the sum of its proper divisors (7000707333341).

21002122000011 is an equidigital number, since it uses as much as digits as its factorization.

21002122000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000707333340.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21002122000011 its reverse (11000022120012), we get a palindrome (32002144120023).

The spelling of 21002122000011 in words is "twenty-one trillion, two billion, one hundred twenty-two million, eleven", and thus it is an aban number.