121303003321121 has 4 divisors (see below), whose sum is σ = 121303052551044. Its totient is φ = 121302954091200.

The previous prime is 121303003321099. The next prime is 121303003321147. The reversal of 121303003321121 is 121123300303121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55026145397521 + 66276857923600 = 7417961^2 + 8141060^2 .

It is a cyclic number.

It is not a de Polignac number, because 121303003321121 - 2²² = 121302999126817 is a prime.

It is a super-2 number, since 2×121303003321121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121303003321021) 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, 20712740 + ... + 25915701.

It is an arithmetic number, because the mean of its divisors is an integer number (30325763137761).

Almost surely, 2^{121303003321121} is an apocalyptic number.

It is an amenable number.

121303003321121 is a deficient number, since it is larger than the sum of its proper divisors (49229923).

121303003321121 is an equidigital number, since it uses as much as digits as its factorization.

121303003321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49229922.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 121303003321121 its reverse (121123300303121), we get a palindrome (242426303624242).

The spelling of 121303003321121 in words is "one hundred twenty-one trillion, three hundred three billion, three million, three hundred twenty-one thousand, one hundred twenty-one".