10222021021221 has 12 divisors (see below), whose sum is σ = 14900601490060. Its totient is φ = 6752160673920.

The previous prime is 10222021021193. The next prime is 10222021021291. The reversal of 10222021021221 is 12212012022201.

It is a happy number.

10222021021221 is a `hidden beast` number, since 1 + 0 + 2 + 220 + 210 + 212 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5141279618721 + 5080741402500 = 2267439^2 + 2254050^2 .

It is not a de Polignac number, because 10222021021221 - 2²⁹ = 10221484150309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10222021021194 and 10222021021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222021021291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5209999540 + ... + 5210001501.

Almost surely, 2^{10222021021221} is an apocalyptic number.

It is an amenable number.

10222021021221 is a deficient number, since it is larger than the sum of its proper divisors (4678580468839).

10222021021221 is a wasteful number, since it uses less digits than its factorization.

10222021021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10420001156 (or 10420001153 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10222021021221 its reverse (12212012022201), we get a palindrome (22434033043422).

The spelling of 10222021021221 in words is "ten trillion, two hundred twenty-two billion, twenty-one million, twenty-one thousand, two hundred twenty-one".