21022201110121 has 2 divisors, whose sum is σ = 21022201110122. Its totient is φ = 21022201110120.

The previous prime is 21022201110103. The next prime is 21022201110139. The reversal of 21022201110121 is 12101110222012.

It is a balanced prime because it is at equal distance from previous prime (21022201110103) and next prime (21022201110139).

It can be written as a sum of positive squares in only one way, i.e., 20364822307600 + 657378802521 = 4512740^2 + 810789^2 .

It is a cyclic number.

It is not a de Polignac number, because 21022201110121 - 2⁷ = 21022201109993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21022201110095 and 21022201110104.

It is not a weakly prime, because it can be changed into another prime (21022201110191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511100555060 + 10511100555061.

It is an arithmetic number, because the mean of its divisors is an integer number (10511100555061).

Almost surely, 2^{21022201110121} is an apocalyptic number.

It is an amenable number.

21022201110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022201110121 is an equidigital number, since it uses as much as digits as its factorization.

21022201110121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21022201110121 its reverse (12101110222012), we get a palindrome (33123311332133).

The spelling of 21022201110121 in words is "twenty-one trillion, twenty-two billion, two hundred one million, one hundred ten thousand, one hundred twenty-one".