1031301011221 has 16 divisors (see below), whose sum is σ = 1136725216704. Its totient is φ = 929614742784.

The previous prime is 1031301011197. The next prime is 1031301011303. The reversal of 1031301011221 is 1221101031301.

It is a happy number.

It is not a de Polignac number, because 1031301011221 - 2¹⁵ = 1031300978453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031301011195 and 1031301011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031301021221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2211690 + ... + 2637076.

It is an arithmetic number, because the mean of its divisors is an integer number (71045326044).

Almost surely, 2^{1031301011221} is an apocalyptic number.

It is an amenable number.

1031301011221 is a deficient number, since it is larger than the sum of its proper divisors (105424205483).

1031301011221 is a wasteful number, since it uses less digits than its factorization.

1031301011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429780.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1031301011221 its reverse (1221101031301), we get a palindrome (2252402042522).

The spelling of 1031301011221 in words is "one trillion, thirty-one billion, three hundred one million, eleven thousand, two hundred twenty-one".