10211131123 has 4 divisors (see below), whose sum is σ = 10428389280. Its totient is φ = 9993872968.

The previous prime is 10211131111. The next prime is 10211131153. The reversal of 10211131123 is 32113111201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32113111201 = 21517 ⋅1492453.

It is a cyclic number.

It is not a de Polignac number, because 10211131123 - 2²¹ = 10209033971 is a prime.

It is a super-2 number, since 2×10211131123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211131097 and 10211131106.

It is not an unprimeable number, because it can be changed into a prime (10211131153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108629008 + ... + 108629101.

It is an arithmetic number, because the mean of its divisors is an integer number (2607097320).

Almost surely, 2^10211131123 is an apocalyptic number.

10211131123 is a deficient number, since it is larger than the sum of its proper divisors (217258157).

10211131123 is an equidigital number, since it uses as much as digits as its factorization.

10211131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217258156.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 10211131123 its reverse (32113111201), we get a palindrome (42324242324).

The spelling of 10211131123 in words is "ten billion, two hundred eleven million, one hundred thirty-one thousand, one hundred twenty-three".