221210210202200 has 96 divisors (see below), whose sum is σ = 520505697222000. Its totient is φ = 87420380467200.

The previous prime is 221210210202109. The next prime is 221210210202217. The reversal of 221210210202200 is 2202012012122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17474720 + ... + 27345680.

Almost surely, 2^{221210210202200} is an apocalyptic number.

221210210202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221210210202200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260252848611000).

221210210202200 is an abundant number, since it is smaller than the sum of its proper divisors (299295487019800).

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

221210210202200 is a wasteful number, since it uses less digits than its factorization.

221210210202200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9872325 (or 9872316 counting only the distinct ones).

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

Adding to 221210210202200 its reverse (2202012012122), we get a palindrome (223412222214322).

The spelling of 221210210202200 in words is "two hundred twenty-one trillion, two hundred ten billion, two hundred ten million, two hundred two thousand, two hundred".