1220202001323 has 36 divisors (see below), whose sum is σ = 1827691967400. Its totient is φ = 784276327296.

The previous prime is 1220202001289. The next prime is 1220202001379. The reversal of 1220202001323 is 3231002020221.

1220202001323 is a `hidden beast` number, since 122 + 0 + 20 + 200 + 1 + 323 = 666.

It is not a de Polignac number, because 1220202001323 - 2³⁰ = 1219128259499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220202001296 and 1220202001305.

It is not an unprimeable number, because it can be changed into a prime (1220202001393) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 874003 + ... + 1790051.

Almost surely, 2^{1220202001323} is an apocalyptic number.

1220202001323 is a deficient number, since it is larger than the sum of its proper divisors (607489966077).

1220202001323 is an equidigital number, since it uses as much as digits as its factorization.

1220202001323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916216 (or 916166 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1220202001323 its reverse (3231002020221), we get a palindrome (4451204021544).

The spelling of 1220202001323 in words is "one trillion, two hundred twenty billion, two hundred two million, one thousand, three hundred twenty-three".