1022231220221 has 8 divisors (see below), whose sum is σ = 1036876293120. Its totient is φ = 1007628783408.

The previous prime is 1022231220191. The next prime is 1022231220223. The reversal of 1022231220221 is 1220221322201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022231220221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1022231220193 and 1022231220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022231220223) 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, 10610726 + ... + 10706631.

It is an arithmetic number, because the mean of its divisors is an integer number (129609536640).

Almost surely, 2^{1022231220221} is an apocalyptic number.

It is an amenable number.

1022231220221 is a deficient number, since it is larger than the sum of its proper divisors (14645072899).

1022231220221 is an equidigital number, since it uses as much as digits as its factorization.

1022231220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21318043.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1022231220221 its reverse (1220221322201), we get a palindrome (2242452542422).

The spelling of 1022231220221 in words is "one trillion, twenty-two billion, two hundred thirty-one million, two hundred twenty thousand, two hundred twenty-one".