21120020000211 has 16 divisors (see below), whose sum is σ = 30754898633088. Its totient is φ = 12785483145600.

The previous prime is 21120020000159. The next prime is 21120020000221. The reversal of 21120020000211 is 11200002002112.

It is not a de Polignac number, because 21120020000211 - 2¹⁰ = 21120019999187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120020000221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363194881 + ... + 363253026.

It is an arithmetic number, because the mean of its divisors is an integer number (1922181164568).

Almost surely, 2^{21120020000211} is an apocalyptic number.

21120020000211 is a deficient number, since it is larger than the sum of its proper divisors (9634878632877).

21120020000211 is a wasteful number, since it uses less digits than its factorization.

21120020000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726448802.

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

Adding to 21120020000211 its reverse (11200002002112), we get a palindrome (32320022002323).

The spelling of 21120020000211 in words is "twenty-one trillion, one hundred twenty billion, twenty million, two hundred eleven", and thus it is an aban number.