10221110110021 has 4 divisors (see below), whose sum is σ = 10278211284000. Its totient is φ = 10164008936044.

The previous prime is 10221110109983. The next prime is 10221110110027. The reversal of 10221110110021 is 12001101112201.

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 10221110110021 - 2⁷ = 10221110109893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221110109983 and 10221110110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221110110027) 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, 28550586721 + ... + 28550587078.

It is an arithmetic number, because the mean of its divisors is an integer number (2569552821000).

Almost surely, 2^{10221110110021} is an apocalyptic number.

It is an amenable number.

10221110110021 is a deficient number, since it is larger than the sum of its proper divisors (57101173979).

10221110110021 is an equidigital number, since it uses as much as digits as its factorization.

10221110110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57101173978.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10221110110021 its reverse (12001101112201), we get a palindrome (22222211222222).

The spelling of 10221110110021 in words is "ten trillion, two hundred twenty-one billion, one hundred ten million, one hundred ten thousand, twenty-one".