1220132321323 has 4 divisors (see below), whose sum is σ = 1238343251560. Its totient is φ = 1201921391088.

The previous prime is 1220132321299. The next prime is 1220132321339. The reversal of 1220132321323 is 3231232310221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220132321323 - 2²¹ = 1220130224171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220132321393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9105465018 + ... + 9105465151.

It is an arithmetic number, because the mean of its divisors is an integer number (309585812890).

Almost surely, 2^{1220132321323} is an apocalyptic number.

1220132321323 is a deficient number, since it is larger than the sum of its proper divisors (18210930237).

1220132321323 is an equidigital number, since it uses as much as digits as its factorization.

1220132321323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18210930236.

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

Adding to 1220132321323 its reverse (3231232310221), we get a palindrome (4451364631544).

The spelling of 1220132321323 in words is "one trillion, two hundred twenty billion, one hundred thirty-two million, three hundred twenty-one thousand, three hundred twenty-three".