10111310221 has 4 divisors (see below), whose sum is σ = 10184053600. Its totient is φ = 10038566844.

The previous prime is 10111310219. The next prime is 10111310257. The reversal of 10111310221 is 12201311101.

It is a happy number.

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 10111310221 - 2¹ = 10111310219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111310281) 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, 36371481 + ... + 36371758.

It is an arithmetic number, because the mean of its divisors is an integer number (2546013400).

Almost surely, 2^10111310221 is an apocalyptic number.

It is an amenable number.

10111310221 is a deficient number, since it is larger than the sum of its proper divisors (72743379).

10111310221 is an equidigital number, since it uses as much as digits as its factorization.

10111310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72743378.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 10111310221 its reverse (12201311101), we get a palindrome (22312621322).

The spelling of 10111310221 in words is "ten billion, one hundred eleven million, three hundred ten thousand, two hundred twenty-one".