2151224124 has 48 divisors (see below), whose sum is σ = 5870016768. Its totient is φ = 600340608.

The previous prime is 2151224123. The next prime is 2151224143. The reversal of 2151224124 is 4214221512.

It is a junction number, because it is equal to n+sod(n) for n = 2151224094 and 2151224103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151224123) 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, 294177 + ... + 301400.

It is an arithmetic number, because the mean of its divisors is an integer number (122292016).

Almost surely, 2^2151224124 is an apocalyptic number.

It is an amenable number.

2151224124 is an abundant number, since it is smaller than the sum of its proper divisors (3718792644).

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

2151224124 is a wasteful number, since it uses less digits than its factorization.

2151224124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595634 (or 595632 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 2151224124 is about 46381.2906676819. The cubic root of 2151224124 is about 1290.9077848063.

Adding to 2151224124 its reverse (4214221512), we get a palindrome (6365445636).

The spelling of 2151224124 in words is "two billion, one hundred fifty-one million, two hundred twenty-four thousand, one hundred twenty-four".