21112002221211 has 48 divisors (see below), whose sum is σ = 34501760791680. Its totient is φ = 12794323014720.

The previous prime is 21112002221201. The next prime is 21112002221269. The reversal of 21112002221211 is 11212220021112.

21112002221211 is a `hidden beast` number, since 21 + 11 + 200 + 2 + 221 + 211 = 666.

It is not a de Polignac number, because 21112002221211 - 2⁶ = 21112002221147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112002221201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42287280 + ... + 42783618.

It is an arithmetic number, because the mean of its divisors is an integer number (718786683160).

Almost surely, 2^{21112002221211} is an apocalyptic number.

21112002221211 is a deficient number, since it is larger than the sum of its proper divisors (13389758570469).

21112002221211 is a wasteful number, since it uses less digits than its factorization.

21112002221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512278 (or 512266 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 21112002221211 its reverse (11212220021112), we get a palindrome (32324222242323).

The spelling of 21112002221211 in words is "twenty-one trillion, one hundred twelve billion, two million, two hundred twenty-one thousand, two hundred eleven".