2102021040 has 160 divisors (see below), whose sum is σ = 7524518400. Its totient is φ = 475471872.

The previous prime is 2102021029. The next prime is 2102021041. The reversal of 2102021040 is 401202012.

2102021040 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (2102021041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156511 + ... + 169409.

It is an arithmetic number, because the mean of its divisors is an integer number (47028240).

Almost surely, 2^2102021040 is an apocalyptic number.

2102021040 is a gapful number since it is divisible by the number (20) 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 2102021040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3762259200).

2102021040 is an abundant number, since it is smaller than the sum of its proper divisors (5422497360).

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

2102021040 is a wasteful number, since it uses less digits than its factorization.

2102021040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13019 (or 13013 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2102021040 is about 45847.8030007982. The cubic root of 2102021040 is about 1280.9898430663.

Adding to 2102021040 its reverse (401202012), we get a palindrome (2503223052).

The spelling of 2102021040 in words is "two billion, one hundred two million, twenty-one thousand, forty".