221001121100210 has 32 divisors (see below), whose sum is σ = 433967423928192. Its totient is φ = 80363750308480.

The previous prime is 221001121100209. The next prime is 221001121100233. The reversal of 221001121100210 is 12001121100122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27780347 + ... + 34838913.

It is an arithmetic number, because the mean of its divisors is an integer number (13561481997756).

Almost surely, 2^{221001121100210} is an apocalyptic number.

221001121100210 is a deficient number, since it is larger than the sum of its proper divisors (212966302827982).

221001121100210 is a wasteful number, since it uses less digits than its factorization.

221001121100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7343218.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221001121100210 its reverse (12001121100122), we get a palindrome (233002242200332).

The spelling of 221001121100210 in words is "two hundred twenty-one trillion, one billion, one hundred twenty-one million, one hundred thousand, two hundred ten".