221100101122 has 8 divisors (see below), whose sum is σ = 343086363900. Its totient is φ = 106737979824.

The previous prime is 221100101107. The next prime is 221100101129. The reversal of 221100101122 is 221101001122.

It can be written as a sum of positive squares in 2 ways, for example, as 210525886561 + 10574214561 = 458831^2 + 102831^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221100101129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906035297 + ... + 1906035412.

Almost surely, 2^221100101122 is an apocalyptic number.

221100101122 is a deficient number, since it is larger than the sum of its proper divisors (121986262778).

221100101122 is a wasteful number, since it uses less digits than its factorization.

221100101122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3812070740.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221100101122 its reverse (221101001122), we get a palindrome (442201102244).

The spelling of 221100101122 in words is "two hundred twenty-one billion, one hundred million, one hundred one thousand, one hundred twenty-two".