121303132121 has 4 divisors (see below), whose sum is σ = 121373129892. Its totient is φ = 121233134352.

The previous prime is 121303132117. The next prime is 121303132123. The reversal of 121303132121 is 121231303121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121231303121 = 491 ⋅246906931.

It can be written as a sum of positive squares in 2 ways, for example, as 56565962896 + 64737169225 = 237836^2 + 254435^2 .

It is a cyclic number.

It is not a de Polignac number, because 121303132121 - 2² = 121303132117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121303132093 and 121303132102.

It is not an unprimeable number, because it can be changed into a prime (121303132123) 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 in 3 ways as a sum of consecutive naturals, for example, 34996286 + ... + 34999751.

It is an arithmetic number, because the mean of its divisors is an integer number (30343282473).

Almost surely, 2^121303132121 is an apocalyptic number.

It is an amenable number.

121303132121 is a deficient number, since it is larger than the sum of its proper divisors (69997771).

121303132121 is an equidigital number, since it uses as much as digits as its factorization.

121303132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69997770.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121303132121 its reverse (121231303121), we get a palindrome (242534435242).

The spelling of 121303132121 in words is "one hundred twenty-one billion, three hundred three million, one hundred thirty-two thousand, one hundred twenty-one".