2145212063 has 4 divisors (see below), whose sum is σ = 2145400680. Its totient is φ = 2145023448.

The previous prime is 2145212033. The next prime is 2145212089. The reversal of 2145212063 is 3602125412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2145212063 - 2⁸ = 2145211807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145212033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76073 + ... + 100386.

It is an arithmetic number, because the mean of its divisors is an integer number (536350170).

Almost surely, 2^2145212063 is an apocalyptic number.

2145212063 is a deficient number, since it is larger than the sum of its proper divisors (188617).

2145212063 is a wasteful number, since it uses less digits than its factorization.

2145212063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188616.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2145212063 is about 46316.4340488341. The cubic root of 2145212063 is about 1289.7040891285.

Adding to 2145212063 its reverse (3602125412), we get a palindrome (5747337475).

The spelling of 2145212063 in words is "two billion, one hundred forty-five million, two hundred twelve thousand, sixty-three".