221001220102010 has 16 divisors (see below), whose sum is σ = 398464096687272. Its totient is φ = 88253399040000.

The previous prime is 221001220102009. The next prime is 221001220102057. The reversal of 221001220102010 is 10201022100122.

It can be written as a sum of positive squares in 4 ways, for example, as 196041134157961 + 24960085944049 = 14001469^2 + 4996007^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18386118791 + ... + 18386130810.

Almost surely, 2^{221001220102010} is an apocalyptic number.

221001220102010 is a deficient number, since it is larger than the sum of its proper divisors (177462876585262).

221001220102010 is a wasteful number, since it uses less digits than its factorization.

221001220102010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36772250209.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221001220102010 its reverse (10201022100122), we get a palindrome (231202242202132).

The spelling of 221001220102010 in words is "two hundred twenty-one trillion, one billion, two hundred twenty million, one hundred two thousand, ten".