221110202100121 has 8 divisors (see below), whose sum is σ = 222358126320000. Its totient is φ = 219862418677200.

The previous prime is 221110202100101. The next prime is 221110202100167. The reversal of 221110202100121 is 121001202011122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221110202100121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221110202100095 and 221110202100104.

It is not an unprimeable number, because it can be changed into a prime (221110202100101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32048746 + ... + 38332003.

It is an arithmetic number, because the mean of its divisors is an integer number (27794765790000).

Almost surely, 2^{221110202100121} is an apocalyptic number.

It is an amenable number.

221110202100121 is a deficient number, since it is larger than the sum of its proper divisors (1247924219879).

221110202100121 is a wasteful number, since it uses less digits than its factorization.

221110202100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70398479.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221110202100121 its reverse (121001202011122), we get a palindrome (342111404111243).

The spelling of 221110202100121 in words is "two hundred twenty-one trillion, one hundred ten billion, two hundred two million, one hundred thousand, one hundred twenty-one".