221201431004 has 12 divisors (see below), whose sum is σ = 387180473904. Its totient is φ = 110578438464.

The previous prime is 221201430991. The next prime is 221201431051. The reversal of 221201431004 is 400134102122.

221201431004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 5546909 + ... + 5586644.

It is an arithmetic number, because the mean of its divisors is an integer number (32265039492).

Almost surely, 2^221201431004 is an apocalyptic number.

It is an amenable number.

221201431004 is a deficient number, since it is larger than the sum of its proper divisors (165979042900).

221201431004 is a wasteful number, since it uses less digits than its factorization.

221201431004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11138524 (or 11138522 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221201431004 its reverse (400134102122), we get a palindrome (621335533126).

The spelling of 221201431004 in words is "two hundred twenty-one billion, two hundred one million, four hundred thirty-one thousand, four".