1220202100323 has 12 divisors (see below), whose sum is σ = 1770278527368. Its totient is φ = 809884505760.

The previous prime is 1220202100283. The next prime is 1220202100343. The reversal of 1220202100323 is 3230012020221.

1220202100323 is a `hidden beast` number, since 1 + 220 + 20 + 2 + 100 + 323 = 666.

It is not a de Polignac number, because 1220202100323 - 2⁸ = 1220202100067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220202100296 and 1220202100305.

It is not an unprimeable number, because it can be changed into a prime (1220202100343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298627938 + ... + 298632023.

It is an arithmetic number, because the mean of its divisors is an integer number (147523210614).

Almost surely, 2^{1220202100323} is an apocalyptic number.

1220202100323 is a deficient number, since it is larger than the sum of its proper divisors (550076427045).

1220202100323 is a wasteful number, since it uses less digits than its factorization.

1220202100323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597260194 (or 597260191 counting only the distinct ones).

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

Adding to 1220202100323 its reverse (3230012020221), we get a palindrome (4450214120544).

The spelling of 1220202100323 in words is "one trillion, two hundred twenty billion, two hundred two million, one hundred thousand, three hundred twenty-three".