221312144342430 has 96 divisors (see below), whose sum is σ = 605700124323840. Its totient is φ = 55910092224960.

The previous prime is 221312144342413. The next prime is 221312144342573. The reversal of 221312144342430 is 34243441213122.

221312144342430 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 1 + 214 + 4 + 3 + 4 + 2 + 430 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 388211779 + ... + 388781441.

It is an arithmetic number, because the mean of its divisors is an integer number (6309376295040).

Almost surely, 2^{221312144342430} is an apocalyptic number.

221312144342430 is an abundant number, since it is smaller than the sum of its proper divisors (384387979981410).

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

221312144342430 is a wasteful number, since it uses less digits than its factorization.

221312144342430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796886 (or 796883 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 221312144342430 its reverse (34243441213122), we get a palindrome (255555585555552).

The spelling of 221312144342430 in words is "two hundred twenty-one trillion, three hundred twelve billion, one hundred forty-four million, three hundred forty-two thousand, four hundred thirty".