10221010022221 has 4 divisors (see below), whose sum is σ = 10350389896000. Its totient is φ = 10091630148444.

The previous prime is 10221010022213. The next prime is 10221010022243. The reversal of 10221010022221 is 12222001012201.

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 10221010022221 - 2³ = 10221010022213 is a prime.

It is a super-3 number, since 3×10221010022221³ (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 = 10221010022195 and 10221010022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221010022261) 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, 64689936771 + ... + 64689936928.

It is an arithmetic number, because the mean of its divisors is an integer number (2587597474000).

Almost surely, 2^{10221010022221} is an apocalyptic number.

It is an amenable number.

10221010022221 is a deficient number, since it is larger than the sum of its proper divisors (129379873779).

10221010022221 is an equidigital number, since it uses as much as digits as its factorization.

10221010022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129379873778.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10221010022221 its reverse (12222001012201), we get a palindrome (22443011034422).

It can be divided in two parts, 102210100 and 22221, that added together give a square (102232321 = 10111²).

The spelling of 10221010022221 in words is "ten trillion, two hundred twenty-one billion, ten million, twenty-two thousand, two hundred twenty-one".