1301112121 has 2 divisors, whose sum is σ = 1301112122. Its totient is φ = 1301112120.

The previous prime is 1301112107. The next prime is 1301112161. The reversal of 1301112121 is 1212111031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1296000000 + 5112121 = 36000^2 + 2261^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301112121 - 2⁵ = 1301112089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1301112161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650556060 + 650556061.

It is an arithmetic number, because the mean of its divisors is an integer number (650556061).

Almost surely, 2^1301112121 is an apocalyptic number.

It is an amenable number.

1301112121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301112121 is an equidigital number, since it uses as much as digits as its factorization.

1301112121 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 13.

The square root of 1301112121 is about 36070.9318011054. The cubic root of 1301112121 is about 1091.7040151108.

Adding to 1301112121 its reverse (1212111031), we get a palindrome (2513223152).

The spelling of 1301112121 in words is "one billion, three hundred one million, one hundred twelve thousand, one hundred twenty-one".