2152121107 has 2 divisors, whose sum is σ = 2152121108. Its totient is φ = 2152121106.

The previous prime is 2152121087. The next prime is 2152121113. The reversal of 2152121107 is 7011212512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2152121107 - 2⁷ = 2152120979 is a prime.

It is not a weakly prime, because it can be changed into another prime (2152121177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076060553 + 1076060554.

It is an arithmetic number, because the mean of its divisors is an integer number (1076060554).

Almost surely, 2^2152121107 is an apocalyptic number.

2152121107 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152121107 is an equidigital number, since it uses as much as digits as its factorization.

2152121107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 2152121107 is about 46390.9593239890. The cubic root of 2152121107 is about 1291.0871805628.

Adding to 2152121107 its reverse (7011212512), we get a palindrome (9163333619).

The spelling of 2152121107 in words is "two billion, one hundred fifty-two million, one hundred twenty-one thousand, one hundred seven".