2021533512 has 64 divisors (see below), whose sum is σ = 5367643200. Its totient is φ = 632248320.

The previous prime is 2021533471. The next prime is 2021533541. The reversal of 2021533512 is 2153351202.

It is a happy number.

2021533512 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 (24).

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, 127564 + ... + 142532.

It is an arithmetic number, because the mean of its divisors is an integer number (83869425).

Almost surely, 2^2021533512 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 2021533512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2683821600).

2021533512 is an abundant number, since it is smaller than the sum of its proper divisors (3346109688).

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

2021533512 is a wasteful number, since it uses less digits than its factorization.

2021533512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15326 (or 15322 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2021533512 is about 44961.4669689502. The cubic root of 2021533512 is about 1264.4266722396.

Adding to 2021533512 its reverse (2153351202), we get a palindrome (4174884714).

The spelling of 2021533512 in words is "two billion, twenty-one million, five hundred thirty-three thousand, five hundred twelve".