1321123201022 has 4 divisors (see below), whose sum is σ = 1981684801536. Its totient is φ = 660561600510.

The previous prime is 1321123201009. The next prime is 1321123201031. The reversal of 1321123201022 is 2201023211231.

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 = 1321123200985 and 1321123201003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330280800254 + ... + 330280800257.

It is an arithmetic number, because the mean of its divisors is an integer number (495421200384).

Almost surely, 2^{1321123201022} is an apocalyptic number.

1321123201022 is a deficient number, since it is larger than the sum of its proper divisors (660561600514).

1321123201022 is an equidigital number, since it uses as much as digits as its factorization.

1321123201022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660561600513.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1321123201022 its reverse (2201023211231), we get a palindrome (3522146412253).

The spelling of 1321123201022 in words is "one trillion, three hundred twenty-one billion, one hundred twenty-three million, two hundred one thousand, twenty-two".