221021110010 has 16 divisors (see below), whose sum is σ = 397873251072. Its totient is φ = 88400610000.

The previous prime is 221021110003. The next prime is 221021110061. The reversal of 221021110010 is 10011120122.

It is a junction number, because it is equal to n+sod(n) for n = 221021109973 and 221021110000.

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, 860066 + ... + 1087085.

It is an arithmetic number, because the mean of its divisors is an integer number (24867078192).

Almost surely, 2^221021110010 is an apocalyptic number.

221021110010 is a deficient number, since it is larger than the sum of its proper divisors (176852141062).

221021110010 is a wasteful number, since it uses less digits than its factorization.

221021110010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958509.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221021110010 its reverse (10011120122), we get a palindrome (231032230132).

The spelling of 221021110010 in words is "two hundred twenty-one billion, twenty-one million, one hundred ten thousand, ten".