10002220222021 has 16 divisors (see below), whose sum is σ = 10849082046768. Its totient is φ = 9184088166400.

The previous prime is 10002220222013. The next prime is 10002220222031. The reversal of 10002220222021 is 12022202220001.

It can be written as a sum of positive squares in 8 ways, for example, as 615110804100 + 9387109417921 = 784290^2 + 3063839^2 .

It is not a de Polignac number, because 10002220222021 - 2³ = 10002220222013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002220221986 and 10002220222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002220222031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62218281 + ... + 62378833.

It is an arithmetic number, because the mean of its divisors is an integer number (678067627923).

Almost surely, 2^{10002220222021} is an apocalyptic number.

It is an amenable number.

10002220222021 is a deficient number, since it is larger than the sum of its proper divisors (846861824747).

10002220222021 is a wasteful number, since it uses less digits than its factorization.

10002220222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249992.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 10002220222021 its reverse (12022202220001), we get a palindrome (22024422442022).

The spelling of 10002220222021 in words is "ten trillion, two billion, two hundred twenty million, two hundred twenty-two thousand, twenty-one".