1220323201101 has 12 divisors (see below), whose sum is σ = 1762793582940. Its totient is φ = 813500563200.

The previous prime is 1220323201091. The next prime is 1220323201199. The reversal of 1220323201101 is 1011023230221.

1220323201101 is a `hidden beast` number, since 1 + 220 + 323 + 20 + 1 + 101 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1027800578025 + 192522623076 = 1013805^2 + 438774^2 .

It is not a de Polignac number, because 1220323201101 - 2¹³ = 1220323192909 is a prime.

It is a super-2 number, since 2×1220323201101² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220323201001) 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 11 ways as a sum of consecutive naturals, for example, 3859236 + ... + 4163453.

It is an arithmetic number, because the mean of its divisors is an integer number (146899465245).

Almost surely, 2^{1220323201101} is an apocalyptic number.

It is an amenable number.

1220323201101 is a deficient number, since it is larger than the sum of its proper divisors (542470381839).

1220323201101 is a wasteful number, since it uses less digits than its factorization.

1220323201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8039596 (or 8039593 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1220323201101 its reverse (1011023230221), we get a palindrome (2231346431322).

The spelling of 1220323201101 in words is "one trillion, two hundred twenty billion, three hundred twenty-three million, two hundred one thousand, one hundred one".