2151020124 has 60 divisors (see below), whose sum is σ = 6134400888. Its totient is φ = 651823200.

The previous prime is 2151020107. The next prime is 2151020141. The reversal of 2151020124 is 4210201512.

It is an interprime number because it is at equal distance from previous prime (2151020107) and next prime (2151020141).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2151020097 and 2151020106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 298207 + ... + 305334.

Almost surely, 2^2151020124 is an apocalyptic number.

It is an amenable number.

2151020124 is an abundant number, since it is smaller than the sum of its proper divisors (3983380764).

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

2151020124 is a wasteful number, since it uses less digits than its factorization.

2151020124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603568 (or 603557 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2151020124 is about 46379.0914529381. The cubic root of 2151020124 is about 1290.8669780380.

Adding to 2151020124 its reverse (4210201512), we get a palindrome (6361221636).

The spelling of 2151020124 in words is "two billion, one hundred fifty-one million, twenty thousand, one hundred twenty-four".