4121221043 has 2 divisors, whose sum is σ = 4121221044. Its totient is φ = 4121221042.

The previous prime is 4121221033. The next prime is 4121221063. The reversal of 4121221043 is 3401221214.

It is an a-pointer prime, because the next prime (4121221063) can be obtained adding 4121221043 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4121221043 - 2⁸ = 4121220787 is a prime.

It is not a weakly prime, because it can be changed into another prime (4121221033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060610521 + 2060610522.

It is an arithmetic number, because the mean of its divisors is an integer number (2060610522).

Almost surely, 2^4121221043 is an apocalyptic number.

4121221043 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121221043 is an equidigital number, since it uses as much as digits as its factorization.

4121221043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4121221043 is about 64196.7370120943. The cubic root of 4121221043 is about 1603.2772725685.

Adding to 4121221043 its reverse (3401221214), we get a palindrome (7522442257).

The spelling of 4121221043 in words is "four billion, one hundred twenty-one million, two hundred twenty-one thousand, forty-three".