221100221002210 has 16 divisors (see below), whose sum is σ = 434160433968192. Its totient is φ = 80400080364400.

The previous prime is 221100221002201. The next prime is 221100221002211. The reversal of 221100221002210 is 12200122001122.

It is a happy number.

It is a super-2 number, since 2×221100221002210² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221100221002211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005001004446 + ... + 1005001004665.

It is an arithmetic number, because the mean of its divisors is an integer number (27135027123012).

Almost surely, 2^{221100221002210} is an apocalyptic number.

221100221002210 is a deficient number, since it is larger than the sum of its proper divisors (213060212965982).

221100221002210 is a wasteful number, since it uses less digits than its factorization.

221100221002210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010002009129.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221100221002210 its reverse (12200122001122), we get a palindrome (233300343003332).

The spelling of 221100221002210 in words is "two hundred twenty-one trillion, one hundred billion, two hundred twenty-one million, two thousand, two hundred ten".