221552101002 has 8 divisors (see below), whose sum is σ = 443104202016. Its totient is φ = 73850700332.

The previous prime is 221552100997. The next prime is 221552101019. The reversal of 221552101002 is 200101255122.

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

221552101002 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 221552101002.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 18462675078 + ... + 18462675089.

It is an arithmetic number, because the mean of its divisors is an integer number (55388025252).

Almost surely, 2^221552101002 is an apocalyptic number.

221552101002 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.

221552101002 is a wasteful number, since it uses less digits than its factorization.

221552101002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36925350172.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 221552101002 its reverse (200101255122), we get a palindrome (421653356124).

The spelling of 221552101002 in words is "two hundred twenty-one billion, five hundred fifty-two million, one hundred one thousand, two".