113201222021 has 8 divisors (see below), whose sum is σ = 119863220760. Its totient is φ = 106539568128.

The previous prime is 113201222011. The next prime is 113201222041. The reversal of 113201222021 is 120222102311.

It can be written as a sum of positive squares in 4 ways, for example, as 85330588996 + 27870633025 = 292114^2 + 166945^2 .

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 113201222021 - 2¹⁰ = 113201220997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113201222011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936095 + ... + 1050083.

It is an arithmetic number, because the mean of its divisors is an integer number (14982902595).

Almost surely, 2^113201222021 is an apocalyptic number.

It is an amenable number.

113201222021 is a deficient number, since it is larger than the sum of its proper divisors (6661998739).

113201222021 is a wasteful number, since it uses less digits than its factorization.

113201222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172423.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 113201222021 its reverse (120222102311), we get a palindrome (233423324332).

The spelling of 113201222021 in words is "one hundred thirteen billion, two hundred one million, two hundred twenty-two thousand, twenty-one".