221201430992 has 40 divisors (see below), whose sum is σ = 442463204352. Its totient is φ = 107018352000.

The previous prime is 221201430991. The next prime is 221201431051. The reversal of 221201430992 is 299034102122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201430991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4203242 + ... + 4255542.

Almost surely, 2^221201430992 is an apocalyptic number.

It is an amenable number.

221201430992 is an abundant number, since it is smaller than the sum of its proper divisors (221261773360).

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

221201430992 is a wasteful number, since it uses less digits than its factorization.

221201430992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60867 (or 60861 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 221201430992 in words is "two hundred twenty-one billion, two hundred one million, four hundred thirty thousand, nine hundred ninety-two".