121010001110221 has 2 divisors, whose sum is σ = 121010001110222. Its totient is φ = 121010001110220.

The previous prime is 121010001110213. The next prime is 121010001110227. The reversal of 121010001110221 is 122011100010121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121008140136900 + 1860973321 = 11000370^2 + 43139^2 .

It is a cyclic number.

It is not a de Polignac number, because 121010001110221 - 2³ = 121010001110213 is a prime.

It is a super-3 number, since 3×121010001110221³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121010001110227) 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 as a sum of consecutive naturals, namely, 60505000555110 + 60505000555111.

It is an arithmetic number, because the mean of its divisors is an integer number (60505000555111).

Almost surely, 2^{121010001110221} is an apocalyptic number.

It is an amenable number.

121010001110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

121010001110221 is an equidigital number, since it uses as much as digits as its factorization.

121010001110221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121010001110221 its reverse (122011100010121), we get a palindrome (243021101120342).

The spelling of 121010001110221 in words is "one hundred twenty-one trillion, ten billion, one million, one hundred ten thousand, two hundred twenty-one".