221210010200220 has 24 divisors (see below), whose sum is σ = 619388028560784. Its totient is φ = 58989336053376.

The previous prime is 221210010200159. The next prime is 221210010200251. The reversal of 221210010200220 is 22002010012122.

It is a super-2 number, since 2×221210010200220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221210010200220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1843416751609 + ... + 1843416751728.

It is an arithmetic number, because the mean of its divisors is an integer number (25807834523366).

Almost surely, 2^{221210010200220} is an apocalyptic number.

221210010200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221210010200220 is an abundant number, since it is smaller than the sum of its proper divisors (398178018360564).

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

221210010200220 is a wasteful number, since it uses less digits than its factorization.

221210010200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686833503349 (or 3686833503347 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221210010200220 its reverse (22002010012122), we get a palindrome (243212020212342).

The spelling of 221210010200220 in words is "two hundred twenty-one trillion, two hundred ten billion, ten million, two hundred thousand, two hundred twenty".