113010311121221 has 2 divisors, whose sum is σ = 113010311121222. Its totient is φ = 113010311121220.

The previous prime is 113010311121209. The next prime is 113010311121283. The reversal of 113010311121221 is 122121113010311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112643092089025 + 367219032196 = 10613345^2 + 605986^2 .

It is a cyclic number.

It is not a de Polignac number, because 113010311121221 - 2¹⁴ = 113010311104837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113010311121193 and 113010311121202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113010311121821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56505155560610 + 56505155560611.

It is an arithmetic number, because the mean of its divisors is an integer number (56505155560611).

Almost surely, 2^{113010311121221} is an apocalyptic number.

It is an amenable number.

113010311121221 is a deficient number, since it is larger than the sum of its proper divisors (1).

113010311121221 is an equidigital number, since it uses as much as digits as its factorization.

113010311121221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 113010311121221 its reverse (122121113010311), we get a palindrome (235131424131532).

The spelling of 113010311121221 in words is "one hundred thirteen trillion, ten billion, three hundred eleven million, one hundred twenty-one thousand, two hundred twenty-one".