1221434323434 has 48 divisors (see below), whose sum is σ = 2948289762600. Its totient is φ = 362866428288.

The previous prime is 1221434323367. The next prime is 1221434323451. The reversal of 1221434323434 is 4343234341221.

1221434323434 is a `hidden beast` number, since 1 + 2 + 214 + 3 + 4 + 3 + 2 + 3 + 434 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1020817226025 + 200617097409 = 1010355^2 + 447903^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89989849 + ... + 90003420.

Almost surely, 2^{1221434323434} is an apocalyptic number.

1221434323434 is an abundant number, since it is smaller than the sum of its proper divisors (1726855439166).

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

1221434323434 is a wasteful number, since it uses less digits than its factorization.

1221434323434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179993319 (or 179993316 counting only the distinct ones).

The product of its digits is 165888, while the sum is 36.

Adding to 1221434323434 its reverse (4343234341221), we get a palindrome (5564668664655).

The spelling of 1221434323434 in words is "one trillion, two hundred twenty-one billion, four hundred thirty-four million, three hundred twenty-three thousand, four hundred thirty-four".