2151245112 has 64 divisors (see below), whose sum is σ = 5473401600. Its totient is φ = 704436480.

The previous prime is 2151245087. The next prime is 2151245119. The reversal of 2151245112 is 2115421512.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151245119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656037 + ... + 659307.

It is an arithmetic number, because the mean of its divisors is an integer number (85521900).

Almost surely, 2^2151245112 is an apocalyptic number.

It is an amenable number.

2151245112 is an abundant number, since it is smaller than the sum of its proper divisors (3322156488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2151245112 is a wasteful number, since it uses less digits than its factorization.

2151245112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756 (or 3752 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 2151245112 is about 46381.5169221534. The cubic root of 2151245112 is about 1290.9119829563.

Adding to 2151245112 its reverse (2115421512), we get a palindrome (4266666624).

The spelling of 2151245112 in words is "two billion, one hundred fifty-one million, two hundred forty-five thousand, one hundred twelve".