221002210120220 has 24 divisors (see below), whose sum is σ = 464105026742784. Its totient is φ = 88400810621376.

The previous prime is 221002210120201. The next prime is 221002210120259. The reversal of 221002210120220 is 22021012200122.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 24628517 + ... + 32381603.

It is an arithmetic number, because the mean of its divisors is an integer number (19337709447616).

Almost surely, 2^{221002210120220} is an apocalyptic number.

221002210120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221002210120220 is an abundant number, since it is smaller than the sum of its proper divisors (243102816622564).

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

221002210120220 is a wasteful number, since it uses less digits than its factorization.

221002210120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9178349 (or 9178347 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221002210120220 its reverse (22021012200122), we get a palindrome (243023222320342).

The spelling of 221002210120220 in words is "two hundred twenty-one trillion, two billion, two hundred ten million, one hundred twenty thousand, two hundred twenty".