1031121301321 has 16 divisors (see below), whose sum is σ = 1101225248640. Its totient is φ = 963133839360.

The previous prime is 1031121301283. The next prime is 1031121301339. The reversal of 1031121301321 is 1231031211301.

It is not a de Polignac number, because 1031121301321 - 2⁷ = 1031121301193 is a prime.

It is a super-2 number, since 2×1031121301321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031121301361) 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, 4315375 + ... + 4548043.

It is an arithmetic number, because the mean of its divisors is an integer number (68826578040).

Almost surely, 2^{1031121301321} is an apocalyptic number.

It is an amenable number.

1031121301321 is a deficient number, since it is larger than the sum of its proper divisors (70103947319).

1031121301321 is a wasteful number, since it uses less digits than its factorization.

1031121301321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237216.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1031121301321 its reverse (1231031211301), we get a palindrome (2262152512622).

The spelling of 1031121301321 in words is "one trillion, thirty-one billion, one hundred twenty-one million, three hundred one thousand, three hundred twenty-one".