2151101 has 2 divisors, whose sum is σ = 2151102. Its totient is φ = 2151100.

The previous prime is 2151089. The next prime is 2151119. The reversal of 2151101 is 1011512.

2151101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1503076 + 648025 = 1226^2 + 805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151101 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151001) 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, 1075550 + 1075551.

It is an arithmetic number, because the mean of its divisors is an integer number (1075551).

2^2151101 is an apocalyptic number.

It is an amenable number.

2151101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151101 is an equidigital number, since it uses as much as digits as its factorization.

2151101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 2151101 is about 1466.6632196929. The cubic root of 2151101 is about 129.0883156230.

Adding to 2151101 its reverse (1011512), we get a palindrome (3162613).

The spelling of 2151101 in words is "two million, one hundred fifty-one thousand, one hundred one".