2021661130032 has 120 divisors (see below), whose sum is σ = 5727136529088. Its totient is φ = 665664768000.

The previous prime is 2021661130007. The next prime is 2021661130123. The reversal of 2021661130032 is 2300311661202.

2021661130032 is a `hidden beast` number, since 2 + 0 + 2 + 16 + 611 + 3 + 0 + 0 + 32 = 666.

It is a super-2 number, since 2×2021661130032² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021661129978 and 2021661130005.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6107208 + ... + 6429720.

Almost surely, 2^{2021661130032} 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 2021661130032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2863568264544).

2021661130032 is an abundant number, since it is smaller than the sum of its proper divisors (3705475399056).

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

2021661130032 is a wasteful number, since it uses less digits than its factorization.

2021661130032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323059 (or 323050 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 2021661130032 its reverse (2300311661202), we get a palindrome (4321972791234).

The spelling of 2021661130032 in words is "two trillion, twenty-one billion, six hundred sixty-one million, one hundred thirty thousand, thirty-two".