2151224152 has 96 divisors (see below), whose sum is σ = 5137524000. Its totient is φ = 826467840.

The previous prime is 2151224143. The next prime is 2151224177. The reversal of 2151224152 is 2514221512.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 492474 + ... + 496822.

It is an arithmetic number, because the mean of its divisors is an integer number (53515875).

Almost surely, 2^2151224152 is an apocalyptic number.

2151224152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151224152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2568762000).

2151224152 is an abundant number, since it is smaller than the sum of its proper divisors (2986299848).

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

2151224152 is a wasteful number, since it uses less digits than its factorization.

2151224152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4457 (or 4442 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 2151224152 is about 46381.2909695278. The cubic root of 2151224152 is about 1290.9077904070.

Adding to 2151224152 its reverse (2514221512), we get a palindrome (4665445664).

The spelling of 2151224152 in words is "two billion, one hundred fifty-one million, two hundred twenty-four thousand, one hundred fifty-two".