2021144212 has 24 divisors (see below), whose sum is σ = 3874205160. Its totient is φ = 918328320.

The previous prime is 2021144207. The next prime is 2021144219. The reversal of 2021144212 is 2124411202.

It can be written as a sum of positive squares in 4 ways, for example, as 657614736 + 1363529476 = 25644^2 + 36926^2 .

It is a super-2 number, since 2×2021144212² = 8170047851402201888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2021144212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021144219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510489 + ... + 514432.

It is an arithmetic number, because the mean of its divisors is an integer number (161425215).

Almost surely, 2^2021144212 is an apocalyptic number.

It is an amenable number.

2021144212 is a deficient number, since it is larger than the sum of its proper divisors (1853060948).

2021144212 is a wasteful number, since it uses less digits than its factorization.

2021144212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024971 (or 1024969 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2021144212 is about 44957.1374978434. The cubic root of 2021144212 is about 1264.3455007095.

Adding to 2021144212 its reverse (2124411202), we get a palindrome (4145555414).

The spelling of 2021144212 in words is "two billion, twenty-one million, one hundred forty-four thousand, two hundred twelve".