1002022220221 has 8 divisors (see below), whose sum is σ = 1093603392000. Its totient is φ = 910522422240.

The previous prime is 1002022220209. The next prime is 1002022220327. The reversal of 1002022220221 is 1220222202001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002022220221 - 2¹³ = 1002022212029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002022220195 and 1002022220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002022220621) 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 7 ways as a sum of consecutive naturals, for example, 20317696 + ... + 20366953.

It is an arithmetic number, because the mean of its divisors is an integer number (136700424000).

Almost surely, 2^{1002022220221} is an apocalyptic number.

1002022220221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1002022220221 is a deficient number, since it is larger than the sum of its proper divisors (91581171779).

1002022220221 is a wasteful number, since it uses less digits than its factorization.

1002022220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40686899.

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

Adding to 1002022220221 its reverse (1220222202001), we get a palindrome (2222244422222).

The spelling of 1002022220221 in words is "one trillion, two billion, twenty-two million, two hundred twenty thousand, two hundred twenty-one".