1031222213211 has 4 divisors (see below), whose sum is σ = 1374962950952. Its totient is φ = 687481475472.

The previous prime is 1031222213201. The next prime is 1031222213221. The reversal of 1031222213211 is 1123122221301.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1031222213201) and next prime (1031222213221).

It is not a de Polignac number, because 1031222213211 - 2⁷ = 1031222213083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031222213201) 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 3 ways as a sum of consecutive naturals, for example, 171870368866 + ... + 171870368871.

It is an arithmetic number, because the mean of its divisors is an integer number (343740737738).

Almost surely, 2^{1031222213211} is an apocalyptic number.

1031222213211 is a deficient number, since it is larger than the sum of its proper divisors (343740737741).

1031222213211 is an equidigital number, since it uses as much as digits as its factorization.

1031222213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343740737740.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1031222213211 its reverse (1123122221301), we get a palindrome (2154344434512).

The spelling of 1031222213211 in words is "one trillion, thirty-one billion, two hundred twenty-two million, two hundred thirteen thousand, two hundred eleven".