22011221101 has 2 divisors, whose sum is σ = 22011221102. Its totient is φ = 22011221100.

The previous prime is 22011221077. The next prime is 22011221143. The reversal of 22011221101 is 10112211022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21985475625 + 25745476 = 148275^2 + 5074^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011221101 - 2⁹ = 22011220589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22011221171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005610550 + 11005610551.

It is an arithmetic number, because the mean of its divisors is an integer number (11005610551).

Almost surely, 2^22011221101 is an apocalyptic number.

It is an amenable number.

22011221101 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011221101 is an equidigital number, since it uses as much as digits as its factorization.

22011221101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22011221101 its reverse (10112211022), we get a palindrome (32123432123).

The spelling of 22011221101 in words is "twenty-two billion, eleven million, two hundred twenty-one thousand, one hundred one".