2101025124 has 108 divisors (see below), whose sum is σ = 6026325760. Its totient is φ = 616096800.

The previous prime is 2101025123. The next prime is 2101025167. The reversal of 2101025124 is 4215201012.

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 = 2101025097 and 2101025106.

It is not an unprimeable number, because it can be changed into a prime (2101025123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 127257 + ... + 142815.

Almost surely, 2^2101025124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101025124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3013162880).

2101025124 is an abundant number, since it is smaller than the sum of its proper divisors (3925300636).

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

2101025124 is a wasteful number, since it uses less digits than its factorization.

2101025124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15622 (or 15606 counting only the distinct ones).

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

The square root of 2101025124 is about 45836.9406047131. The cubic root of 2101025124 is about 1280.7875044931.

Adding to 2101025124 its reverse (4215201012), we get a palindrome (6316226136).

The spelling of 2101025124 in words is "two billion, one hundred one million, twenty-five thousand, one hundred twenty-four".