21100002221211 has 16 divisors (see below), whose sum is σ = 28916217348864. Its totient is φ = 13675820268384.

The previous prime is 21100002221201. The next prime is 21100002221257. The reversal of 21100002221211 is 11212220000112.

It is not a de Polignac number, because 21100002221211 - 2¹⁹ = 21100001696923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100002221201) 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, 73937911 + ... + 74222736.

It is an arithmetic number, because the mean of its divisors is an integer number (1807263584304).

Almost surely, 2^{21100002221211} is an apocalyptic number.

21100002221211 is a deficient number, since it is larger than the sum of its proper divisors (7816215127653).

21100002221211 is a wasteful number, since it uses less digits than its factorization.

21100002221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148161970.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21100002221211 its reverse (11212220000112), we get a palindrome (32312222221323).

The spelling of 21100002221211 in words is "twenty-one trillion, one hundred billion, two million, two hundred twenty-one thousand, two hundred eleven".