221100000220122 has 16 divisors (see below), whose sum is σ = 445381295409120. Its totient is φ = 73169784245232.

The previous prime is 221100000220109. The next prime is 221100000220201. The reversal of 221100000220122 is 221022000001122.

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, 132553956133 + ... + 132553957800.

It is an arithmetic number, because the mean of its divisors is an integer number (27836330963070).

Almost surely, 2^{221100000220122} is an apocalyptic number.

221100000220122 is an abundant number, since it is smaller than the sum of its proper divisors (224281295188998).

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

221100000220122 is a wasteful number, since it uses less digits than its factorization.

221100000220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265107914077.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221100000220122 its reverse (221022000001122), we get a palindrome (442122000221244).

The spelling of 221100000220122 in words is "two hundred twenty-one trillion, one hundred billion, two hundred twenty thousand, one hundred twenty-two".