2021030134020 has 72 divisors (see below), whose sum is σ = 6136973420760. Its totient is φ = 538368591360.

The previous prime is 2021030133989. The next prime is 2021030134021. The reversal of 2021030134020 is 204310301202.

2021030134020 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 0 + 301 + 340 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 916664545476 + 1104365588544 = 957426^2 + 1050888^2 .

It is a super-2 number, since 2×2021030134020² (a number of 25 digits) contains 22 as substring.

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 = 2021030133984 and 2021030134002.

It is not an unprimeable number, because it can be changed into a prime (2021030134021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5796585 + ... + 6135344.

It is an arithmetic number, because the mean of its divisors is an integer number (85235741955).

Almost surely, 2^{2021030134020} is an apocalyptic number.

2021030134020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021030134020 is an abundant number, since it is smaller than the sum of its proper divisors (4115943286740).

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

2021030134020 is a wasteful number, since it uses less digits than its factorization.

2021030134020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11932885 (or 11932880 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 2021030134020 its reverse (204310301202), we get a palindrome (2225340435222).

The spelling of 2021030134020 in words is "two trillion, twenty-one billion, thirty million, one hundred thirty-four thousand, twenty".