221001112221110 has 32 divisors (see below), whose sum is σ = 429274665604512. Its totient is φ = 81434218360320.

The previous prime is 221001112221089. The next prime is 221001112221121. The reversal of 221001112221110 is 11122211100122.

It is a congruent number.

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, 1731105779 + ... + 1731233438.

It is an arithmetic number, because the mean of its divisors is an integer number (13414833300141).

Almost surely, 2^{221001112221110} is an apocalyptic number.

221001112221110 is a deficient number, since it is larger than the sum of its proper divisors (208273553383402).

221001112221110 is a wasteful number, since it uses less digits than its factorization.

221001112221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462339728.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221001112221110 its reverse (11122211100122), we get a palindrome (232123323321232).

The spelling of 221001112221110 in words is "two hundred twenty-one trillion, one billion, one hundred twelve million, two hundred twenty-one thousand, one hundred ten".