1231013223211 has 16 divisors (see below), whose sum is σ = 1250413274880. Its totient is φ = 1211729698080.

The previous prime is 1231013223203. The next prime is 1231013223259. The reversal of 1231013223211 is 1123223101321.

It is a cyclic number.

It is not a de Polignac number, because 1231013223211 - 2³ = 1231013223203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231013227211) 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, 26685276 + ... + 26731366.

It is an arithmetic number, because the mean of its divisors is an integer number (78150829680).

Almost surely, 2^{1231013223211} is an apocalyptic number.

1231013223211 is a deficient number, since it is larger than the sum of its proper divisors (19400051669).

1231013223211 is an equidigital number, since it uses as much as digits as its factorization.

1231013223211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47346.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1231013223211 its reverse (1123223101321), we get a palindrome (2354236324532).

The spelling of 1231013223211 in words is "one trillion, two hundred thirty-one billion, thirteen million, two hundred twenty-three thousand, two hundred eleven".