1022011321321 has 12 divisors (see below), whose sum is σ = 1046542937412. Its totient is φ = 998042151456.

The previous prime is 1022011321267. The next prime is 1022011321327. The reversal of 1022011321321 is 1231231102201.

It can be written as a sum of positive squares in 2 ways, for example, as 835332021225 + 186679300096 = 913965^2 + 432064^2 .

It is not a de Polignac number, because 1022011321321 - 2⁹ = 1022011320809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022011321327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9556075 + ... + 9662431.

It is an arithmetic number, because the mean of its divisors is an integer number (87211911451).

Almost surely, 2^{1022011321321} is an apocalyptic number.

It is an amenable number.

1022011321321 is a deficient number, since it is larger than the sum of its proper divisors (24531616091).

1022011321321 is an equidigital number, since it uses as much as digits as its factorization.

1022011321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111640 (or 111597 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1022011321321 its reverse (1231231102201), we get a palindrome (2253242423522).

The spelling of 1022011321321 in words is "one trillion, twenty-two billion, eleven million, three hundred twenty-one thousand, three hundred twenty-one".