21202120000011 has 8 divisors (see below), whose sum is σ = 28274134548544. Its totient is φ = 14132426059080.

The previous prime is 21202119999971. The next prime is 21202120000043. The reversal of 21202120000011 is 11000002120212.

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

It is not a de Polignac number, because 21202120000011 - 2¹⁰ = 21202119998987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202120000051) 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, 580130581 + ... + 580167126.

It is an arithmetic number, because the mean of its divisors is an integer number (3534266818568).

Almost surely, 2^{21202120000011} is an apocalyptic number.

21202120000011 is a deficient number, since it is larger than the sum of its proper divisors (7072014548533).

21202120000011 is a wasteful number, since it uses less digits than its factorization.

21202120000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160303801.

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

Adding to 21202120000011 its reverse (11000002120212), we get a palindrome (32202122120223).

The spelling of 21202120000011 in words is "twenty-one trillion, two hundred two billion, one hundred twenty million, eleven", and thus it is an aban number.