2119608121 has 2 divisors, whose sum is σ = 2119608122. Its totient is φ = 2119608120.

The previous prime is 2119608107. The next prime is 2119608149. The reversal of 2119608121 is 1218069112.

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., 1580857600 + 538750521 = 39760^2 + 23211^2 .

It is a cyclic number.

It is not a de Polignac number, because 2119608121 - 2⁵ = 2119608089 is a prime.

It is not a weakly prime, because it can be changed into another prime (2119608151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059804060 + 1059804061.

It is an arithmetic number, because the mean of its divisors is an integer number (1059804061).

Almost surely, 2^2119608121 is an apocalyptic number.

It is an amenable number.

2119608121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2119608121 is an equidigital number, since it uses as much as digits as its factorization.

2119608121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 2119608121 is about 46039.2020022068. The cubic root of 2119608121 is about 1284.5524987201.

The spelling of 2119608121 in words is "two billion, one hundred nineteen million, six hundred eight thousand, one hundred twenty-one".