2151530012 has 12 divisors (see below), whose sum is σ = 3766405776. Its totient is φ = 1075414080.

The previous prime is 2151530011. The next prime is 2151530089. The reversal of 2151530012 is 2100351512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151530011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73688 + ... + 98655.

It is an arithmetic number, because the mean of its divisors is an integer number (313867148).

Almost surely, 2^2151530012 is an apocalyptic number.

It is an amenable number.

2151530012 is a deficient number, since it is larger than the sum of its proper divisors (1614875764).

2151530012 is a wasteful number, since it uses less digits than its factorization.

2151530012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175468 (or 175466 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 2151530012 is about 46384.5880869929. The cubic root of 2151530012 is about 1290.9689677209.

Adding to 2151530012 its reverse (2100351512), we get a palindrome (4251881524).

The spelling of 2151530012 in words is "two billion, one hundred fifty-one million, five hundred thirty thousand, twelve".