2113000121 has 2 divisors, whose sum is σ = 2113000122. Its totient is φ = 2113000120.

The previous prime is 2113000081. The next prime is 2113000147. The reversal of 2113000121 is 1210003112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1687155625 + 425844496 = 41075^2 + 20636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113000121 is a prime.

It is a super-2 number, since 2×2113000121² = 8929539022692029282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2113002121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056500060 + 1056500061.

It is an arithmetic number, because the mean of its divisors is an integer number (1056500061).

Almost surely, 2^2113000121 is an apocalyptic number.

It is an amenable number.

2113000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113000121 is an equidigital number, since it uses as much as digits as its factorization.

2113000121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2113000121 is about 45967.3810543955. The cubic root of 2113000121 is about 1283.2162203956.

Adding to 2113000121 its reverse (1210003112), we get a palindrome (3323003233).

The spelling of 2113000121 in words is "two billion, one hundred thirteen million, one hundred twenty-one", and thus it is an aban number.