243220321220422 has 64 divisors (see below), whose sum is σ = 470424727793664. Its totient is φ = 91725409480320.

The previous prime is 243220321220389. The next prime is 243220321220521. The reversal of 243220321220422 is 224022123022342.

It is a super-2 number, since 2×243220321220422² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321330073 + ... + 322086100.

It is an arithmetic number, because the mean of its divisors is an integer number (7350386371776).

Almost surely, 2^{243220321220422} is an apocalyptic number.

243220321220422 is a deficient number, since it is larger than the sum of its proper divisors (227204406573242).

243220321220422 is a wasteful number, since it uses less digits than its factorization.

243220321220422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643416293.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 243220321220422 its reverse (224022123022342), we get a palindrome (467242444242764).

The spelling of 243220321220422 in words is "two hundred forty-three trillion, two hundred twenty billion, three hundred twenty-one million, two hundred twenty thousand, four hundred twenty-two".