2043221029 has 2 divisors, whose sum is σ = 2043221030. Its totient is φ = 2043221028.

The previous prime is 2043221027. The next prime is 2043221039. The reversal of 2043221029 is 9201223402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2043220804 + 225 = 45202^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043221029 - 2¹ = 2043221027 is a prime.

Together with 2043221027, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2043220994 and 2043221012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2043221027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021610514 + 1021610515.

It is an arithmetic number, because the mean of its divisors is an integer number (1021610515).

Almost surely, 2^2043221029 is an apocalyptic number.

It is an amenable number.

2043221029 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043221029 is an equidigital number, since it uses as much as digits as its factorization.

2043221029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2043221029 is about 45202.0024888279. The cubic root of 2043221029 is about 1268.9322931418.

The spelling of 2043221029 in words is "two billion, forty-three million, two hundred twenty-one thousand, twenty-nine".