121030301221 has 4 divisors (see below), whose sum is σ = 121035340492. Its totient is φ = 121025261952.

The previous prime is 121030301209. The next prime is 121030301237. The reversal of 121030301221 is 122103030121.

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 80755430625 + 40274870596 = 284175^2 + 200686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121030301221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121030301195 and 121030301204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030301201) 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, 2483436 + ... + 2531701.

It is an arithmetic number, because the mean of its divisors is an integer number (30258835123).

Almost surely, 2^121030301221 is an apocalyptic number.

It is an amenable number.

121030301221 is a deficient number, since it is larger than the sum of its proper divisors (5039271).

121030301221 is an equidigital number, since it uses as much as digits as its factorization.

121030301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039270.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121030301221 its reverse (122103030121), we get a palindrome (243133331342).

The spelling of 121030301221 in words is "one hundred twenty-one billion, thirty million, three hundred one thousand, two hundred twenty-one".