21120222011101 has 16 divisors (see below), whose sum is σ = 22853417241600. Its totient is φ = 19446180219648.

The previous prime is 21120222011081. The next prime is 21120222011117. The reversal of 21120222011101 is 10111022202112.

It is a cyclic number.

It is not a de Polignac number, because 21120222011101 - 2⁵ = 21120222011069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120222011191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71991925 + ... + 72284698.

It is an arithmetic number, because the mean of its divisors is an integer number (1428338577600).

Almost surely, 2^{21120222011101} is an apocalyptic number.

It is an amenable number.

21120222011101 is a deficient number, since it is larger than the sum of its proper divisors (1733195230499).

21120222011101 is a wasteful number, since it uses less digits than its factorization.

21120222011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144276828.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21120222011101 its reverse (10111022202112), we get a palindrome (31231244213213).

The spelling of 21120222011101 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, eleven thousand, one hundred one".