2152121113 has 2 divisors, whose sum is σ = 2152121114. Its totient is φ = 2152121112.

The previous prime is 2152121107. The next prime is 2152121123. The reversal of 2152121113 is 3111212512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2036085129 + 116035984 = 45123^2 + 10772^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152121113 - 2²¹ = 2150023961 is a prime.

It is not a weakly prime, because it can be changed into another prime (2152121123) 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, 1076060556 + 1076060557.

It is an arithmetic number, because the mean of its divisors is an integer number (1076060557).

Almost surely, 2^2152121113 is an apocalyptic number.

It is an amenable number.

2152121113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152121113 is an equidigital number, since it uses as much as digits as its factorization.

2152121113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 19.

The square root of 2152121113 is about 46390.9593886568. The cubic root of 2152121113 is about 1291.0871817626.

Adding to 2152121113 its reverse (3111212512), we get a palindrome (5263333625).

The spelling of 2152121113 in words is "two billion, one hundred fifty-two million, one hundred twenty-one thousand, one hundred thirteen".