221120021202301 has 4 divisors (see below), whose sum is σ = 238129253602492. Its totient is φ = 204110788802112.

The previous prime is 221120021202293. The next prime is 221120021202331. The reversal of 221120021202301 is 103202120021122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13928495768100 + 207191525434201 = 3732090^2 + 14394149^2 .

It is a cyclic number.

It is not a de Polignac number, because 221120021202301 - 2³ = 221120021202293 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 (221120021202331) 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, 8504616200076 + ... + 8504616200101.

It is an arithmetic number, because the mean of its divisors is an integer number (59532313400623).

Almost surely, 2^{221120021202301} is an apocalyptic number.

It is an amenable number.

221120021202301 is a deficient number, since it is larger than the sum of its proper divisors (17009232400191).

221120021202301 is a wasteful number, since it uses less digits than its factorization.

221120021202301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17009232400190.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221120021202301 its reverse (103202120021122), we get a palindrome (324322141223423).

The spelling of 221120021202301 in words is "two hundred twenty-one trillion, one hundred twenty billion, twenty-one million, two hundred two thousand, three hundred one".