1031221113211 has 16 divisors (see below), whose sum is σ = 1116589524768. Its totient is φ = 948793305600.

The previous prime is 1031221113193. The next prime is 1031221113217. The reversal of 1031221113211 is 1123111221301.

1031221113211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1031221113211 - 2¹⁵ = 1031221080443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031221113217) 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, 2881360 + ... + 3219421.

It is an arithmetic number, because the mean of its divisors is an integer number (69786845298).

Almost surely, 2^{1031221113211} is an apocalyptic number.

1031221113211 is a deficient number, since it is larger than the sum of its proper divisors (85368411557).

1031221113211 is a wasteful number, since it uses less digits than its factorization.

1031221113211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101022.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1031221113211 its reverse (1123111221301), we get a palindrome (2154332334512).

The spelling of 1031221113211 in words is "one trillion, thirty-one billion, two hundred twenty-one million, one hundred thirteen thousand, two hundred eleven".