1220333332121 has 8 divisors (see below), whose sum is σ = 1240486470600. Its totient is φ = 1200184957440.

The previous prime is 1220333332073. The next prime is 1220333332123. The reversal of 1220333332121 is 1212333330221.

It can be written as a sum of positive squares in 4 ways, for example, as 3858894400 + 1216474437721 = 62120^2 + 1102939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220333332121 - 2²⁶ = 1220266223257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1220333332123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672536 + ... + 1700873.

It is an arithmetic number, because the mean of its divisors is an integer number (155060808825).

Almost surely, 2^{1220333332121} is an apocalyptic number.

It is an amenable number.

1220333332121 is a deficient number, since it is larger than the sum of its proper divisors (20153138479).

1220333332121 is an equidigital number, since it uses as much as digits as its factorization.

1220333332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381899.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1220333332121 its reverse (1212333330221), we get a palindrome (2432666662342).

The spelling of 1220333332121 in words is "one trillion, two hundred twenty billion, three hundred thirty-three million, three hundred thirty-two thousand, one hundred twenty-one".