10110123221 has 16 divisors (see below), whose sum is σ = 11141506368. Its totient is φ = 9097670400.

The previous prime is 10110123167. The next prime is 10110123223. The reversal of 10110123221 is 12232101101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10110123221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10110123196 and 10110123205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10110123223) 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, 1015550 + ... + 1025456.

It is an arithmetic number, because the mean of its divisors is an integer number (696344148).

Almost surely, 2^10110123221 is an apocalyptic number.

10110123221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10110123221 is a deficient number, since it is larger than the sum of its proper divisors (1031383147).

10110123221 is a wasteful number, since it uses less digits than its factorization.

10110123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10852.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10110123221 its reverse (12232101101), we get a palindrome (22342224322).

It can be divided in two parts, 10110 and 123221, that added together give a palindrome (133331).

The spelling of 10110123221 in words is "ten billion, one hundred ten million, one hundred twenty-three thousand, two hundred twenty-one".