221212342001430 has 96 divisors (see below), whose sum is σ = 628639252716384. Its totient is φ = 53639548351488.

The previous prime is 221212342001393. The next prime is 221212342001549. The reversal of 221212342001430 is 34100243212122.

221212342001430 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 1 + 23 + 4 + 200 + 1 + 430 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 221212342001394 and 221212342001403.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 1410894579 + ... + 1411051358.

It is an arithmetic number, because the mean of its divisors is an integer number (6548325549129).

Almost surely, 2^{221212342001430} is an apocalyptic number.

221212342001430 is an abundant number, since it is smaller than the sum of its proper divisors (407426910714954).

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

221212342001430 is a wasteful number, since it uses less digits than its factorization.

221212342001430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821946030 (or 2821946027 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 221212342001430 its reverse (34100243212122), we get a palindrome (255312585213552).

The spelling of 221212342001430 in words is "two hundred twenty-one trillion, two hundred twelve billion, three hundred forty-two million, one thousand, four hundred thirty".