1321011022 has 4 divisors (see below), whose sum is σ = 1981516536. Its totient is φ = 660505510.

The previous prime is 1321011011. The next prime is 1321011023. The reversal of 1321011022 is 2201101231.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1321010993 and 1321011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321011023) 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 as a sum of consecutive naturals, namely, 330252754 + ... + 330252757.

It is an arithmetic number, because the mean of its divisors is an integer number (495379134).

Almost surely, 2^1321011022 is an apocalyptic number.

1321011022 is a deficient number, since it is larger than the sum of its proper divisors (660505514).

1321011022 is an equidigital number, since it uses as much as digits as its factorization.

1321011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660505513.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1321011022 is about 36345.7153183150. The cubic root of 1321011022 is about 1097.2413026552.

Adding to 1321011022 its reverse (2201101231), we get a palindrome (3522112253).

The spelling of 1321011022 in words is "one billion, three hundred twenty-one million, eleven thousand, twenty-two".