4201221281 has 2 divisors, whose sum is σ = 4201221282. Its totient is φ = 4201221280.

The previous prime is 4201221259. The next prime is 4201221359. The reversal of 4201221281 is 1821221024.

4201221281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3411611281 + 789610000 = 58409^2 + 28100^2 .

It is a cyclic number.

It is not a de Polignac number, because 4201221281 - 2²⁶ = 4134112417 is a prime.

It is a super-2 number, since 2×4201221281² = 35300520503854561922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4201221181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2100610640 + 2100610641.

It is an arithmetic number, because the mean of its divisors is an integer number (2100610641).

Almost surely, 2^4201221281 is an apocalyptic number.

It is an amenable number.

4201221281 is a deficient number, since it is larger than the sum of its proper divisors (1).

4201221281 is an equidigital number, since it uses as much as digits as its factorization.

4201221281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 4201221281 is about 64816.8286866922. The cubic root of 4201221281 is about 1613.5850157699.

The spelling of 4201221281 in words is "four billion, two hundred one million, two hundred twenty-one thousand, two hundred eighty-one".