121335310001 has 4 divisors (see below), whose sum is σ = 121336310004. Its totient is φ = 121334310000.

The previous prime is 121335309983. The next prime is 121335310021. The reversal of 121335310001 is 100013533121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 100013533121 = 116041 ⋅861881.

It can be written as a sum of positive squares in 2 ways, for example, as 119951395600 + 1383914401 = 346340^2 + 37201^2 .

It is a cyclic number.

It is not a de Polignac number, because 121335310001 - 2¹⁴ = 121335293617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121335310021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288050 + ... + 570651.

It is an arithmetic number, because the mean of its divisors is an integer number (30334077501).

Almost surely, 2^121335310001 is an apocalyptic number.

It is an amenable number.

121335310001 is a deficient number, since it is larger than the sum of its proper divisors (1000003).

121335310001 is an equidigital number, since it uses as much as digits as its factorization.

121335310001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000002.

The product of its (nonzero) digits is 270, while the sum is 20.

Adding to 121335310001 its reverse (100013533121), we get a palindrome (221348843122).

The spelling of 121335310001 in words is "one hundred twenty-one billion, three hundred thirty-five million, three hundred ten thousand, one".