2021011252 has 48 divisors (see below), whose sum is σ = 3937248000. Its totient is φ = 901848960.

The previous prime is 2021011243. The next prime is 2021011253. The reversal of 2021011252 is 2521101202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021011253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181749 + ... + 192547.

It is an arithmetic number, because the mean of its divisors is an integer number (82026000).

Almost surely, 2^2021011252 is an apocalyptic number.

It is an amenable number.

2021011252 is a deficient number, since it is larger than the sum of its proper divisors (1916236748).

2021011252 is a wasteful number, since it uses less digits than its factorization.

2021011252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10936 (or 10934 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2021011252 is about 44955.6587316880. The cubic root of 2021011252 is about 1264.3177753147.

Adding to 2021011252 its reverse (2521101202), we get a palindrome (4542112454).

The spelling of 2021011252 in words is "two billion, twenty-one million, eleven thousand, two hundred fifty-two".