10221311123 has 4 divisors (see below), whose sum is σ = 10225109328. Its totient is φ = 10217512920.

The previous prime is 10221311119. The next prime is 10221311147. The reversal of 10221311123 is 32111312201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32111312201 = 42667 ⋅752603.

It is a cyclic number.

It is not a de Polignac number, because 10221311123 - 2² = 10221311119 is a prime.

It is a super-2 number, since 2×10221311123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221310123) 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, 1895063 + ... + 1900448.

It is an arithmetic number, because the mean of its divisors is an integer number (2556277332).

Almost surely, 2^10221311123 is an apocalyptic number.

10221311123 is a deficient number, since it is larger than the sum of its proper divisors (3798205).

10221311123 is an equidigital number, since it uses as much as digits as its factorization.

10221311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798204.

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

Adding to 10221311123 its reverse (32111312201), we get a palindrome (42332623324).

The spelling of 10221311123 in words is "ten billion, two hundred twenty-one million, three hundred eleven thousand, one hundred twenty-three".