121230020312221 has 4 divisors (see below), whose sum is σ = 121230574641792. Its totient is φ = 121229465982652.

The previous prime is 121230020312209. The next prime is 121230020312273. The reversal of 121230020312221 is 122213020032121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121230020312221 - 2²¹ = 121230018215069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121230020312192 and 121230020312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121230020312201) 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, 276836611 + ... + 277274176.

It is an arithmetic number, because the mean of its divisors is an integer number (30307643660448).

Almost surely, 2^{121230020312221} is an apocalyptic number.

It is an amenable number.

121230020312221 is a deficient number, since it is larger than the sum of its proper divisors (554329571).

121230020312221 is an equidigital number, since it uses as much as digits as its factorization.

121230020312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554329570.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 121230020312221 its reverse (122213020032121), we get a palindrome (243443040344342).

The spelling of 121230020312221 in words is "one hundred twenty-one trillion, two hundred thirty billion, twenty million, three hundred twelve thousand, two hundred twenty-one".