221220010002 has 8 divisors (see below), whose sum is σ = 442440020016. Its totient is φ = 73740003332.

The previous prime is 221220009949. The next prime is 221220010027. The reversal of 221220010002 is 200010022122.

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

221220010002 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 221220010002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18435000828 + ... + 18435000839.

It is an arithmetic number, because the mean of its divisors is an integer number (55305002502).

Almost surely, 2^221220010002 is an apocalyptic number.

221220010002 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.

221220010002 is a wasteful number, since it uses less digits than its factorization.

221220010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36870001672.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221220010002 its reverse (200010022122), we get a palindrome (421230032124).

The spelling of 221220010002 in words is "two hundred twenty-one billion, two hundred twenty million, ten thousand, two".