11021201022121 has 2 divisors, whose sum is σ = 11021201022122. Its totient is φ = 11021201022120.

The previous prime is 11021201022017. The next prime is 11021201022133. The reversal of 11021201022121 is 12122010212011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8283235119721 + 2737965902400 = 2878061^2 + 1654680^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021201022121 - 2¹³ = 11021201013929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021201022095 and 11021201022104.

It is not a weakly prime, because it can be changed into another prime (11021201022521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510600511060 + 5510600511061.

It is an arithmetic number, because the mean of its divisors is an integer number (5510600511061).

Almost surely, 2^{11021201022121} is an apocalyptic number.

It is an amenable number.

11021201022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021201022121 is an equidigital number, since it uses as much as digits as its factorization.

11021201022121 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 11021201022121 its reverse (12122010212011), we get a palindrome (23143211234132).

The spelling of 11021201022121 in words is "eleven trillion, twenty-one billion, two hundred one million, twenty-two thousand, one hundred twenty-one".