113303021221 has 8 divisors (see below), whose sum is σ = 122127891704. Its totient is φ = 104493758400.

The previous prime is 113303021137. The next prime is 113303021263. The reversal of 113303021221 is 122120303311.

It can be written as a sum of positive squares in 4 ways, for example, as 1031116321 + 112271904900 = 32111^2 + 335070^2 .

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 113303021221 - 2¹¹ = 113303019173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113303021281) 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, 3886830 + ... + 3915871.

It is an arithmetic number, because the mean of its divisors is an integer number (15265986463).

Almost surely, 2^113303021221 is an apocalyptic number.

It is an amenable number.

113303021221 is a deficient number, since it is larger than the sum of its proper divisors (8824870483).

113303021221 is a wasteful number, since it uses less digits than its factorization.

113303021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7803831.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 113303021221 its reverse (122120303311), we get a palindrome (235423324532).

The spelling of 113303021221 in words is "one hundred thirteen billion, three hundred three million, twenty-one thousand, two hundred twenty-one".