22021211221101 has 12 divisors (see below), whose sum is σ = 32329865655100. Its totient is φ = 14440138505280.

The previous prime is 22021211221019. The next prime is 22021211221111. The reversal of 22021211221101 is 10112211212022.

22021211221101 is a `hidden beast` number, since 220 + 2 + 1 + 211 + 221 + 10 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 466092944100 + 21555118277001 = 682710^2 + 4642749^2 .

It is not a de Polignac number, because 22021211221101 - 2¹¹ = 22021211219053 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 (22021211221111) 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 11 ways as a sum of consecutive naturals, for example, 20055747376 + ... + 20055748473.

Almost surely, 2^{22021211221101} is an apocalyptic number.

It is an amenable number.

22021211221101 is a deficient number, since it is larger than the sum of its proper divisors (10308654433999).

22021211221101 is a wasteful number, since it uses less digits than its factorization.

22021211221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40111495916 (or 40111495913 counting only the distinct ones).

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

Adding to 22021211221101 its reverse (10112211212022), we get a palindrome (32133422433123).

The spelling of 22021211221101 in words is "twenty-two trillion, twenty-one billion, two hundred eleven million, two hundred twenty-one thousand, one hundred one".