1210321220033 has 4 divisors (see below), whose sum is σ = 1214212928448. Its totient is φ = 1206429511620.

The previous prime is 1210321220029. The next prime is 1210321220077. The reversal of 1210321220033 is 3300221230121.

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 1210321220033 - 2² = 1210321220029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210321219987 and 1210321220014.

It is not an unprimeable number, because it can be changed into a prime (1210321220023) 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 3 ways as a sum of consecutive naturals, for example, 1945853741 + ... + 1945854362.

It is an arithmetic number, because the mean of its divisors is an integer number (303553232112).

Almost surely, 2^{1210321220033} is an apocalyptic number.

It is an amenable number.

1210321220033 is a deficient number, since it is larger than the sum of its proper divisors (3891708415).

1210321220033 is an equidigital number, since it uses as much as digits as its factorization.

1210321220033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891708414.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1210321220033 its reverse (3300221230121), we get a palindrome (4510542450154).

The spelling of 1210321220033 in words is "one trillion, two hundred ten billion, three hundred twenty-one million, two hundred twenty thousand, thirty-three".