2145250012 has 12 divisors (see below), whose sum is σ = 3758765976. Its totient is φ = 1071316880.

The previous prime is 2145249991. The next prime is 2145250021. The reversal of 2145250012 is 2100525412.

It is a super-2 number, since 2×2145250012² = 9204195227972000288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 323338 + ... + 329905.

It is an arithmetic number, because the mean of its divisors is an integer number (313230498).

Almost surely, 2^2145250012 is an apocalyptic number.

It is an amenable number.

2145250012 is a deficient number, since it is larger than the sum of its proper divisors (1613515964).

2145250012 is a wasteful number, since it uses less digits than its factorization.

2145250012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654068 (or 654066 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2145250012 is about 46316.8437180255. The cubic root of 2145250012 is about 1289.7116940786.

Adding to 2145250012 its reverse (2100525412), we get a palindrome (4245775424).

The spelling of 2145250012 in words is "two billion, one hundred forty-five million, two hundred fifty thousand, twelve".