221110002212021 has 8 divisors (see below), whose sum is σ = 238120065478680. Its totient is φ = 204100167739392.

The previous prime is 221110002211981. The next prime is 221110002212023. The reversal of 221110002212021 is 120212200011122.

221110002212021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16233405064900 + 204876597147121 = 4029070^2 + 14313511^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 221110002212021 - 2¹⁰ = 221110002210997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221110002212023) 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, 55188716 + ... + 59059413.

It is an arithmetic number, because the mean of its divisors is an integer number (29765008184835).

Almost surely, 2^{221110002212021} is an apocalyptic number.

It is an amenable number.

221110002212021 is a deficient number, since it is larger than the sum of its proper divisors (17010063266659).

221110002212021 is a wasteful number, since it uses less digits than its factorization.

221110002212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114397015.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221110002212021 its reverse (120212200011122), we get a palindrome (341322202223143).

The spelling of 221110002212021 in words is "two hundred twenty-one trillion, one hundred ten billion, two million, two hundred twelve thousand, twenty-one".