221240410010121 has 8 divisors (see below), whose sum is σ = 294987303723904. Its totient is φ = 147493561484880.

The previous prime is 221240410010101. The next prime is 221240410010129. The reversal of 221240410010121 is 121010014042122.

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

It is not a de Polignac number, because 221240410010121 - 2⁵ = 221240410010089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221240410010129) 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, 2552160 + ... + 21189486.

It is an arithmetic number, because the mean of its divisors is an integer number (36873412965488).

Almost surely, 2^{221240410010121} is an apocalyptic number.

It is an amenable number.

221240410010121 is a deficient number, since it is larger than the sum of its proper divisors (73746893713783).

221240410010121 is a wasteful number, since it uses less digits than its factorization.

221240410010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22594271.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221240410010121 its reverse (121010014042122), we get a palindrome (342250424052243).

The spelling of 221240410010121 in words is "two hundred twenty-one trillion, two hundred forty billion, four hundred ten million, ten thousand, one hundred twenty-one".