421021323304422 has 16 divisors (see below), whose sum is σ = 847405975570032. Its totient is φ = 139446552941280.

The previous prime is 421021323304403. The next prime is 421021323304487. The reversal of 421021323304422 is 224403323120124.

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, 223472039029 + ... + 223472040912.

It is an arithmetic number, because the mean of its divisors is an integer number (52962873473127).

Almost surely, 2^{421021323304422} is an apocalyptic number.

421021323304422 is an abundant number, since it is smaller than the sum of its proper divisors (426384652265610).

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

421021323304422 is a wasteful number, since it uses less digits than its factorization.

421021323304422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446944080103.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 421021323304422 its reverse (224403323120124), we get a palindrome (645424646424546).

The spelling of 421021323304422 in words is "four hundred twenty-one trillion, twenty-one billion, three hundred twenty-three million, three hundred four thousand, four hundred twenty-two".