221604454002 has 8 divisors (see below), whose sum is σ = 443208908016. Its totient is φ = 73868151332.

The previous prime is 221604453977. The next prime is 221604454007. The reversal of 221604454002 is 200454406122.

It is a sphenic number, since it is the product of 3 distinct primes.

221604454002 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (221604454007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18467037828 + ... + 18467037839.

It is an arithmetic number, because the mean of its divisors is an integer number (55401113502).

Almost surely, 2^221604454002 is an apocalyptic number.

221604454002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221604454002 is a wasteful number, since it uses less digits than its factorization.

221604454002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36934075672.

The product of its (nonzero) digits is 15360, while the sum is 30.

The spelling of 221604454002 in words is "two hundred twenty-one billion, six hundred four million, four hundred fifty-four thousand, two".