21112202221011 has 96 divisors (see below), whose sum is σ = 34507384128000. Its totient is φ = 12747630139200.

The previous prime is 21112202221009. The next prime is 21112202221037. The reversal of 21112202221011 is 11012220221112.

21112202221011 is a `hidden beast` number, since 211 + 1 + 220 + 2 + 221 + 0 + 11 = 666.

It is not a de Polignac number, because 21112202221011 - 2¹ = 21112202221009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112202221081) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1737766765 + ... + 1737778913.

It is an arithmetic number, because the mean of its divisors is an integer number (359451918000).

Almost surely, 2^{21112202221011} is an apocalyptic number.

21112202221011 is a deficient number, since it is larger than the sum of its proper divisors (13395181906989).

21112202221011 is a wasteful number, since it uses less digits than its factorization.

21112202221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14118 (or 14101 counting only the distinct ones).

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

Adding to 21112202221011 its reverse (11012220221112), we get a palindrome (32124422442123).

The spelling of 21112202221011 in words is "twenty-one trillion, one hundred twelve billion, two hundred two million, two hundred twenty-one thousand, eleven".