2021372 has 12 divisors (see below), whose sum is σ = 3723720. Its totient is φ = 957456.

The previous prime is 2021339. The next prime is 2021377. The reversal of 2021372 is 2731202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13223 + ... + 13374.

It is an arithmetic number, because the mean of its divisors is an integer number (310310).

2^2021372 is an apocalyptic number.

It is an amenable number.

2021372 is a deficient number, since it is larger than the sum of its proper divisors (1702348).

2021372 is a wasteful number, since it uses less digits than its factorization.

2021372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26620 (or 26618 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 2021372 is about 1421.7496263407. The cubic root of 2021372 is about 126.4392997224.

Adding to 2021372 its reverse (2731202), we get a palindrome (4752574).

The spelling of 2021372 in words is "two million, twenty-one thousand, three hundred seventy-two".