1321012424422 has 4 divisors (see below), whose sum is σ = 1981518636636. Its totient is φ = 660506212210.

The previous prime is 1321012424401. The next prime is 1321012424429. The reversal of 1321012424422 is 2244242101231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321012424429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330253106104 + ... + 330253106107.

It is an arithmetic number, because the mean of its divisors is an integer number (495379659159).

Almost surely, 2^{1321012424422} is an apocalyptic number.

1321012424422 is a deficient number, since it is larger than the sum of its proper divisors (660506212214).

1321012424422 is an equidigital number, since it uses as much as digits as its factorization.

1321012424422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660506212213.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1321012424422 its reverse (2244242101231), we get a palindrome (3565254525653).

The spelling of 1321012424422 in words is "one trillion, three hundred twenty-one billion, twelve million, four hundred twenty-four thousand, four hundred twenty-two".