1303111012221 has 16 divisors (see below), whose sum is σ = 1934892717120. Its totient is φ = 866779626960.

The previous prime is 1303111012219. The next prime is 1303111012241. The reversal of 1303111012221 is 1222101113031.

1303111012221 is a `hidden beast` number, since 1 + 30 + 311 + 101 + 2 + 221 = 666.

It is not a de Polignac number, because 1303111012221 - 2¹ = 1303111012219 is a prime.

It is a super-2 number, since 2×1303111012221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1303111012194 and 1303111012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303111012241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54461370 + ... + 54485291.

It is an arithmetic number, because the mean of its divisors is an integer number (120930794820).

Almost surely, 2^{1303111012221} is an apocalyptic number.

It is an amenable number.

1303111012221 is a deficient number, since it is larger than the sum of its proper divisors (631781704899).

1303111012221 is a wasteful number, since it uses less digits than its factorization.

1303111012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108947113 (or 108947107 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1303111012221 its reverse (1222101113031), we get a palindrome (2525212125252).

The spelling of 1303111012221 in words is "one trillion, three hundred three billion, one hundred eleven million, twelve thousand, two hundred twenty-one".