1022222021201 has 8 divisors (see below), whose sum is σ = 1031904611304. Its totient is φ = 1012550595840.

The previous prime is 1022222021173. The next prime is 1022222021207. The reversal of 1022222021201 is 1021202222201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10540102225 + 1011681918976 = 102665^2 + 1005824^2 .

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-1022222021201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022222021201.

It is not an unprimeable number, because it can be changed into a prime (1022222021207) 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 7 ways as a sum of consecutive naturals, for example, 2607146 + ... + 2973491.

It is an arithmetic number, because the mean of its divisors is an integer number (128988076413).

Almost surely, 2^{1022222021201} is an apocalyptic number.

It is an amenable number.

1022222021201 is a deficient number, since it is larger than the sum of its proper divisors (9682590103).

1022222021201 is a wasteful number, since it uses less digits than its factorization.

1022222021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582371.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1022222021201 its reverse (1021202222201), we get a palindrome (2043424243402).

The spelling of 1022222021201 in words is "one trillion, twenty-two billion, two hundred twenty-two million, twenty-one thousand, two hundred one".