1220331003101 has 12 divisors (see below), whose sum is σ = 1503072761148. Its totient is φ = 984468707712.

The previous prime is 1220331003091. The next prime is 1220331003103. The reversal of 1220331003101 is 1013001330221.

It can be written as a sum of positive squares in 2 ways, for example, as 1094327302201 + 126003700900 = 1046101^2 + 354970^2 .

It is not a de Polignac number, because 1220331003101 - 2¹⁸ = 1220330740957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1220331003101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220331003103) 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, 732490766 + ... + 732492431.

It is an arithmetic number, because the mean of its divisors is an integer number (125256063429).

Almost surely, 2^{1220331003101} is an apocalyptic number.

It is an amenable number.

1220331003101 is a deficient number, since it is larger than the sum of its proper divisors (282741758047).

1220331003101 is a wasteful number, since it uses less digits than its factorization.

1220331003101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464983228 (or 1464983221 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1220331003101 its reverse (1013001330221), we get a palindrome (2233332333322).

The spelling of 1220331003101 in words is "one trillion, two hundred twenty billion, three hundred thirty-one million, three thousand, one hundred one".