2043214021 has 2 divisors, whose sum is σ = 2043214022. Its totient is φ = 2043214020.

The previous prime is 2043214013. The next prime is 2043214031. The reversal of 2043214021 is 1204123402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2025900100 + 17313921 = 45010^2 + 4161^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043214021 - 2³ = 2043214013 is a prime.

It is a super-2 number, since 2×2043214021² = 8349447071221976882, 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 2043214021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2043214031) 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 as a sum of consecutive naturals, namely, 1021607010 + 1021607011.

It is an arithmetic number, because the mean of its divisors is an integer number (1021607011).

Almost surely, 2^2043214021 is an apocalyptic number.

It is an amenable number.

2043214021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043214021 is an equidigital number, since it uses as much as digits as its factorization.

2043214021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2043214021 is about 45201.9249700718. The cubic root of 2043214021 is about 1268.9308423789.

Adding to 2043214021 its reverse (1204123402), we get a palindrome (3247337423).

It can be divided in two parts, 20432 and 14021, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 2043214021 in words is "two billion, forty-three million, two hundred fourteen thousand, twenty-one".