331220302203121 has 4 divisors (see below), whose sum is σ = 331220788338544. Its totient is φ = 331219816067700.

The previous prime is 331220302203073. The next prime is 331220302203137. The reversal of 331220302203121 is 121302203022133.

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 a de Polignac number, because none of the positive numbers 2^k-331220302203121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331220302203821) 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, 242044275 + ... + 243408856.

It is an arithmetic number, because the mean of its divisors is an integer number (82805197084636).

Almost surely, 2^{331220302203121} is an apocalyptic number.

It is an amenable number.

331220302203121 is a deficient number, since it is larger than the sum of its proper divisors (486135423).

331220302203121 is an equidigital number, since it uses as much as digits as its factorization.

331220302203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486135422.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 331220302203121 its reverse (121302203022133), we get a palindrome (452522505225254).

The spelling of 331220302203121 in words is "three hundred thirty-one trillion, two hundred twenty billion, three hundred two million, two hundred three thousand, one hundred twenty-one".