121334435401 has 4 divisors (see below), whose sum is σ = 121338224532.
Its totient is φ = 121330646272.
The previous prime is 121334435377. The next prime is 121334435413. The reversal of 121334435401 is 104534433121.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104534433121 = 62773 ⋅1665277.
It can be written as a sum of positive squares in 2 ways, for example, as 112056893001 + 9277542400 = 334749^2 + 96320^2
It is a cyclic number.
It is not a de Polignac number, because 121334435401 - 27 = 121334435273 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (121334435471) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1846120 + ... + 1910713.
It is an arithmetic number, because the mean of its divisors is an integer number (30334556133).
Almost surely, 2121334435401 is an apocalyptic number.
It is an amenable number.
121334435401 is a deficient number, since it is larger than the sum of its proper divisors (3789131).
121334435401 is an equidigital number, since it uses as much as digits as its factorization.
121334435401 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3789130.
The product of its (nonzero) digits is 17280, while the sum is 31.
Adding to 121334435401 its reverse (104534433121), we get a palindrome (225868868522).
The spelling of 121334435401 in words is "one hundred twenty-one billion, three hundred thirty-four million, four hundred thirty-five thousand, four hundred one".