221430561534372 has 24 divisors (see below), whose sum is σ = 516674699665600. Its totient is φ = 73809702975456.

The previous prime is 221430561534361. The next prime is 221430561534409. The reversal of 221430561534372 is 273435165034122.

It is a happy 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, 58617472 + ... + 62280567.

Almost surely, 2^{221430561534372} is an apocalyptic number.

It is an amenable number.

221430561534372 is an abundant number, since it is smaller than the sum of its proper divisors (295244138131228).

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

221430561534372 is a wasteful number, since it uses less digits than its factorization.

221430561534372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121050675 (or 121050673 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 48.

The spelling of 221430561534372 in words is "two hundred twenty-one trillion, four hundred thirty billion, five hundred sixty-one million, five hundred thirty-four thousand, three hundred seventy-two".