4218522901 has 2 divisors, whose sum is σ = 4218522902. Its totient is φ = 4218522900.

The previous prime is 4218522887. The next prime is 4218522907. The reversal of 4218522901 is 1092258124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3957668100 + 260854801 = 62910^2 + 16151^2 .

It is a cyclic number.

It is not a de Polignac number, because 4218522901 - 2⁹ = 4218522389 is a prime.

It is a super-2 number, since 2×4218522901² = 35591870932522911602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4218522907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2109261450 + 2109261451.

It is an arithmetic number, because the mean of its divisors is an integer number (2109261451).

Almost surely, 2^4218522901 is an apocalyptic number.

It is an amenable number.

4218522901 is a deficient number, since it is larger than the sum of its proper divisors (1).

4218522901 is an equidigital number, since it uses as much as digits as its factorization.

4218522901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 4218522901 is about 64950.1570513883. The cubic root of 4218522901 is about 1615.7970232280.

The spelling of 4218522901 in words is "four billion, two hundred eighteen million, five hundred twenty-two thousand, nine hundred one".