1022220020221 has 8 divisors (see below), whose sum is σ = 1022909330520. Its totient is φ = 1021530814272.

The previous prime is 1022220020219. The next prime is 1022220020249. The reversal of 1022220020221 is 1220200222201.

It can be written as a sum of positive squares in 4 ways, for example, as 11821125625 + 1010398894596 = 108725^2 + 1005186^2 .

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 1022220020221 - 2¹ = 1022220020219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022220020195 and 1022220020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022220020621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32945511 + ... + 32976523.

It is an arithmetic number, because the mean of its divisors is an integer number (127863666315).

Almost surely, 2^{1022220020221} is an apocalyptic number.

It is an amenable number.

1022220020221 is a deficient number, since it is larger than the sum of its proper divisors (689310299).

1022220020221 is a wasteful number, since it uses less digits than its factorization.

1022220020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52175.

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

Adding to 1022220020221 its reverse (1220200222201), we get a palindrome (2242420242422).

The spelling of 1022220020221 in words is "one trillion, twenty-two billion, two hundred twenty million, twenty thousand, two hundred twenty-one".