1321022423442 has 16 divisors (see below), whose sum is σ = 2671730745120. Its totient is φ = 435393158112.

The previous prime is 1321022423429. The next prime is 1321022423473. The reversal of 1321022423442 is 2443242201231.

It is a super-2 number, since 2×1321022423442² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1236911848 + ... + 1236912915.

It is an arithmetic number, because the mean of its divisors is an integer number (166983171570).

Almost surely, 2^{1321022423442} is an apocalyptic number.

1321022423442 is an abundant number, since it is smaller than the sum of its proper divisors (1350708321678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321022423442 is a wasteful number, since it uses less digits than its factorization.

1321022423442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473824857.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 1321022423442 its reverse (2443242201231), we get a palindrome (3764264624673).

The spelling of 1321022423442 in words is "one trillion, three hundred twenty-one billion, twenty-two million, four hundred twenty-three thousand, four hundred forty-two".