221100110010010 has 32 divisors (see below), whose sum is σ = 496183104024192. Its totient is φ = 68914320002880.

The previous prime is 221100110009981. The next prime is 221100110010011. The reversal of 221100110010010 is 10010011001122.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (221100110010011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143571499237 + ... + 143571500776.

It is an arithmetic number, because the mean of its divisors is an integer number (15505722000756).

Almost surely, 2^{221100110010010} is an apocalyptic number.

221100110010010 is an abundant number, since it is smaller than the sum of its proper divisors (275082994014182).

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

221100110010010 is a wasteful number, since it uses less digits than its factorization.

221100110010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287143000038.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 221100110010010 its reverse (10010011001122), we get a palindrome (231110121011132).

The spelling of 221100110010010 in words is "two hundred twenty-one trillion, one hundred billion, one hundred ten million, ten thousand, ten".