10013221123 has 16 divisors (see below), whose sum is σ = 10715074560. Its totient is φ = 9336448800.

The previous prime is 10013221121. The next prime is 10013221171. The reversal of 10013221123 is 32112231001.

It is a cyclic number.

It is not a de Polignac number, because 10013221123 - 2¹ = 10013221121 is a prime.

It is a super-2 number, since 2×10013221123² (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 = 10013221097 and 10013221106.

It is not an unprimeable number, because it can be changed into a prime (10013221121) 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, 426378 + ... + 449248.

It is an arithmetic number, because the mean of its divisors is an integer number (669692160).

Almost surely, 2^10013221123 is an apocalyptic number.

10013221123 is a deficient number, since it is larger than the sum of its proper divisors (701853437).

10013221123 is a wasteful number, since it uses less digits than its factorization.

10013221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23418.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10013221123 its reverse (32112231001), we get a palindrome (42125452124).

The spelling of 10013221123 in words is "ten billion, thirteen million, two hundred twenty-one thousand, one hundred twenty-three".