113210220121 has 8 divisors (see below), whose sum is σ = 122793295464. Its totient is φ = 103951994880.

The previous prime is 113210220077. The next prime is 113210220127. The reversal of 113210220121 is 121022012311.

It can be written as a sum of positive squares in 4 ways, for example, as 4888521 + 113205331600 = 2211^2 + 336460^2 .

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 113210220121 - 2¹³ = 113210211929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113210220095 and 113210220104.

It is not an unprimeable number, because it can be changed into a prime (113210220127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81211800 + ... + 81213193.

It is an arithmetic number, because the mean of its divisors is an integer number (15349161933).

Almost surely, 2^113210220121 is an apocalyptic number.

It is an amenable number.

113210220121 is a deficient number, since it is larger than the sum of its proper divisors (9583075343).

113210220121 is a wasteful number, since it uses less digits than its factorization.

113210220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162425051.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 113210220121 its reverse (121022012311), we get a palindrome (234232232432).

The spelling of 113210220121 in words is "one hundred thirteen billion, two hundred ten million, two hundred twenty thousand, one hundred twenty-one".