2021140123040 has 96 divisors (see below), whose sum is σ = 4860579059280. Its totient is φ = 793997107200.

The previous prime is 2021140123039. The next prime is 2021140123099. The reversal of 2021140123040 is 403210411202.

It can be written as a sum of positive squares in 8 ways, for example, as 514737372304 + 1506402750736 = 717452^2 + 1227356^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6294716 + ... + 6608004.

Almost surely, 2^{2021140123040} is an apocalyptic number.

2021140123040 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 2021140123040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2430289529640).

2021140123040 is an abundant number, since it is smaller than the sum of its proper divisors (2839438936240).

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

2021140123040 is a wasteful number, since it uses less digits than its factorization.

2021140123040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314026 (or 314018 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2021140123040 its reverse (403210411202), we get a palindrome (2424350534242).

The spelling of 2021140123040 in words is "two trillion, twenty-one billion, one hundred forty million, one hundred twenty-three thousand, forty".