113210242121 has 2 divisors, whose sum is σ = 113210242122. Its totient is φ = 113210242120.

The previous prime is 113210242091. The next prime is 113210242127. The reversal of 113210242121 is 121242012311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63534747721 + 49675494400 = 252061^2 + 222880^2 .

It is a cyclic number.

It is not a de Polignac number, because 113210242121 - 2³⁰ = 112136500297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113210242093 and 113210242102.

It is not a weakly prime, because it can be changed into another prime (113210242127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56605121060 + 56605121061.

It is an arithmetic number, because the mean of its divisors is an integer number (56605121061).

Almost surely, 2^113210242121 is an apocalyptic number.

It is an amenable number.

113210242121 is a deficient number, since it is larger than the sum of its proper divisors (1).

113210242121 is an equidigital number, since it uses as much as digits as its factorization.

113210242121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 113210242121 its reverse (121242012311), we get a palindrome (234452254432).

The spelling of 113210242121 in words is "one hundred thirteen billion, two hundred ten million, two hundred forty-two thousand, one hundred twenty-one".