1243220223422 has 16 divisors (see below), whose sum is σ = 1963009520640. Its totient is φ = 588884723928.

The previous prime is 1243220223379. The next prime is 1243220223437. The reversal of 1243220223422 is 2243220223421.

It is a happy number.

It is a congruent number.

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, 2697533 + ... + 3124599.

It is an arithmetic number, because the mean of its divisors is an integer number (122688095040).

Almost surely, 2^{1243220223422} is an apocalyptic number.

1243220223422 is a deficient number, since it is larger than the sum of its proper divisors (719789297218).

1243220223422 is a wasteful number, since it uses less digits than its factorization.

1243220223422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503695.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 1243220223422 its reverse (2243220223421), we get a palindrome (3486440446843).

Subtracting 1243220223422 from its reverse (2243220223421), we obtain a palindrome (999999999999).

The spelling of 1243220223422 in words is "one trillion, two hundred forty-three billion, two hundred twenty million, two hundred twenty-three thousand, four hundred twenty-two".