10211123231 has 4 divisors (see below), whose sum is σ = 10211433600. Its totient is φ = 10210812864.

The previous prime is 10211123191. The next prime is 10211123233. The reversal of 10211123231 is 13232111201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13232111201 = 4001 ⋅3307201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10211123231 is a prime.

It is a super-2 number, since 2×10211123231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211123233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99071 + ... + 173888.

It is an arithmetic number, because the mean of its divisors is an integer number (2552858400).

Almost surely, 2^10211123231 is an apocalyptic number.

10211123231 is a deficient number, since it is larger than the sum of its proper divisors (310369).

10211123231 is an equidigital number, since it uses as much as digits as its factorization.

10211123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310368.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10211123231 its reverse (13232111201), we get a palindrome (23443234432).

The spelling of 10211123231 in words is "ten billion, two hundred eleven million, one hundred twenty-three thousand, two hundred thirty-one".