10110101221 has 4 divisors (see below), whose sum is σ = 11029201344. Its totient is φ = 9191001100.

The previous prime is 10110101179. The next prime is 10110101233. The reversal of 10110101221 is 12210101101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10110101221 - 2⁹ = 10110100709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10110101198 and 10110101207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10110101251) 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, 459550045 + ... + 459550066.

It is an arithmetic number, because the mean of its divisors is an integer number (2757300336).

Almost surely, 2^10110101221 is an apocalyptic number.

10110101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10110101221 is a deficient number, since it is larger than the sum of its proper divisors (919100123).

10110101221 is an equidigital number, since it uses as much as digits as its factorization.

10110101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919100122.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10110101221 its reverse (12210101101), we get a palindrome (22320202322).

The spelling of 10110101221 in words is "ten billion, one hundred ten million, one hundred one thousand, two hundred twenty-one".