121011021111401 has 2 divisors, whose sum is σ = 121011021111402. Its totient is φ = 121011021111400.

The previous prime is 121011021111389. The next prime is 121011021111457. The reversal of 121011021111401 is 104111120110121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77737990117225 + 43273030994176 = 8816915^2 + 6578224^2 .

It is a cyclic number.

It is not a de Polignac number, because 121011021111401 - 2¹⁴ = 121011021095017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121011021111401.

It is not a weakly prime, because it can be changed into another prime (121011021111601) 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, 60505510555700 + 60505510555701.

It is an arithmetic number, because the mean of its divisors is an integer number (60505510555701).

Almost surely, 2^{121011021111401} is an apocalyptic number.

It is an amenable number.

121011021111401 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011021111401 is an equidigital number, since it uses as much as digits as its factorization.

121011021111401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121011021111401 its reverse (104111120110121), we get a palindrome (225122141221522).

The spelling of 121011021111401 in words is "one hundred twenty-one trillion, eleven billion, twenty-one million, one hundred eleven thousand, four hundred one".