10221010101221 has 4 divisors (see below), whose sum is σ = 10350389976000. Its totient is φ = 10091630226444.

The previous prime is 10221010101217. The next prime is 10221010101227. The reversal of 10221010101221 is 12210101012201.

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 10221010101221 - 2² = 10221010101217 is a prime.

It is a super-3 number, since 3×10221010101221³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221010101196 and 10221010101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221010101227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64689937271 + ... + 64689937428.

It is an arithmetic number, because the mean of its divisors is an integer number (2587597494000).

Almost surely, 2^{10221010101221} is an apocalyptic number.

It is an amenable number.

10221010101221 is a deficient number, since it is larger than the sum of its proper divisors (129379874779).

10221010101221 is an equidigital number, since it uses as much as digits as its factorization.

10221010101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129379874778.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10221010101221 its reverse (12210101012201), we get a palindrome (22431111113422).

The spelling of 10221010101221 in words is "ten trillion, two hundred twenty-one billion, ten million, one hundred one thousand, two hundred twenty-one".