221200220220210 has 192 divisors, whose sum is σ = 717980662174464. Its totient is φ = 45902962828800.

The previous prime is 221200220220157. The next prime is 221200220220269. The reversal of 221200220220210 is 12022022002122.

221200220220210 is a `hidden beast` number, since 2 + 2 + 1 + 200 + 220 + 220 + 21 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15836701 + ... + 26328720.

It is an arithmetic number, because the mean of its divisors is an integer number (3739482615492).

Almost surely, 2^{221200220220210} is an apocalyptic number.

221200220220210 is an abundant number, since it is smaller than the sum of its proper divisors (496780441954254).

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

221200220220210 is a wasteful number, since it uses less digits than its factorization.

221200220220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42166209 (or 42166206 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 221200220220210 its reverse (12022022002122), we get a palindrome (233222242222332).

The spelling of 221200220220210 in words is "two hundred twenty-one trillion, two hundred billion, two hundred twenty million, two hundred twenty thousand, two hundred ten".