21221110310113 has 8 divisors (see below), whose sum is σ = 24330680449920. Its totient is φ = 18131035908480.

The previous prime is 21221110310077. The next prime is 21221110310173. The reversal of 21221110310113 is 31101301112212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21221110310113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21221110310173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4873932208 + ... + 4873936561.

It is an arithmetic number, because the mean of its divisors is an integer number (3041335056240).

Almost surely, 2^{21221110310113} is an apocalyptic number.

It is an amenable number.

21221110310113 is a deficient number, since it is larger than the sum of its proper divisors (3109570139807).

21221110310113 is an equidigital number, since it uses as much as digits as its factorization.

21221110310113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9747869087.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 21221110310113 its reverse (31101301112212), we get a palindrome (52322411422325).

The spelling of 21221110310113 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred ten million, three hundred ten thousand, one hundred thirteen".